Analysis
- max time kernel
26s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20231222-en - resource tags
arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system - submitted
07/01/2024, 19:22
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
a5341181798e270087fb6aa947a31ec4.exe
Resource
win7-20231215-en
windows7-x64
29 signatures
150 seconds
Behavioral task
behavioral2
Sample
a5341181798e270087fb6aa947a31ec4.exe
Resource
win10v2004-20231222-en
windows10-2004-x64
25 signatures
150 seconds
General
- Target a5341181798e270087fb6aa947a31ec4.exe
- Size 512KB
- Sample240107-x3ef2adcc5
- SHA256 a40dc4273413f6d34ede962fd52d484e64008bf15e6d95118247d317f7d8a735
- MD5 a5341181798e270087fb6aa947a31ec4
- SHA1 1e7f3841c5b679df8099dccdae6da8a2cd81be20
- SHA512 8bdeefa9870f6acf6db55ced03d78257a08d86732730022b6487e438ae38ccd051a02c2e7acbbad107c9d1a22f99067031e431e7ae4fad1045f21959e38b768b
- SSDEEP 6144:1VY0W0sVVZ/dkq5BCoFaJ2i5Lf24C07N5OvSLTUF6pQxI6Upe2cBnTu19bcodj6F:1gDhdkq5BCoC5LfWSLTUQpr2Zu19Qm5Q
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1" horrarcjjo.exe - Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" horrarcjjo.exe -
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1" horrarcjjo.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1" horrarcjjo.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" horrarcjjo.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1" horrarcjjo.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" horrarcjjo.exe - Disables RegEdit via registry modification 1 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1" horrarcjjo.exe - Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation a5341181798e270087fb6aa947a31ec4.exe - Executes dropped EXE 5 IoCs
pid Process 4672 horrarcjjo.exe 544 nlrgrsbxkiqwexk.exe 1944 guvsgbqo.exe 3540 dfagdrlgekjkq.exe 1972 guvsgbqo.exe - Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
-
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" horrarcjjo.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1" horrarcjjo.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" horrarcjjo.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirstRunDisabled = "1" horrarcjjo.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1" horrarcjjo.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1" horrarcjjo.exe - Adds Run key to start application 2 TTPs 3 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ncbidngf = "horrarcjjo.exe" nlrgrsbxkiqwexk.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\lavucnzn = "nlrgrsbxkiqwexk.exe" nlrgrsbxkiqwexk.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ = "dfagdrlgekjkq.exe" nlrgrsbxkiqwexk.exe - Enumerates connected drives 3 TTPs 64 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\j: guvsgbqo.exe File opened (read-only) \??\l: guvsgbqo.exe File opened (read-only) \??\g: guvsgbqo.exe File opened (read-only) \??\j: guvsgbqo.exe File opened (read-only) \??\o: guvsgbqo.exe File opened (read-only) \??\i: guvsgbqo.exe File opened (read-only) \??\p: guvsgbqo.exe File opened (read-only) \??\a: guvsgbqo.exe File opened (read-only) \??\h: horrarcjjo.exe File opened (read-only) \??\l: guvsgbqo.exe File opened (read-only) \??\s: guvsgbqo.exe File opened (read-only) \??\v: guvsgbqo.exe File opened (read-only) \??\w: guvsgbqo.exe File opened (read-only) \??\k: guvsgbqo.exe File opened (read-only) \??\a: horrarcjjo.exe File opened (read-only) \??\m: guvsgbqo.exe File opened (read-only) \??\z: guvsgbqo.exe File opened (read-only) \??\r: horrarcjjo.exe File opened (read-only) \??\s: horrarcjjo.exe File opened (read-only) \??\x: horrarcjjo.exe File opened (read-only) \??\r: guvsgbqo.exe File opened (read-only) \??\x: guvsgbqo.exe File opened (read-only) \??\o: guvsgbqo.exe File opened (read-only) \??\g: guvsgbqo.exe File opened (read-only) \??\e: guvsgbqo.exe File opened (read-only) \??\z: guvsgbqo.exe File opened (read-only) \??\e: guvsgbqo.exe File opened (read-only) \??\j: horrarcjjo.exe File opened (read-only) \??\h: guvsgbqo.exe File opened (read-only) \??\u: horrarcjjo.exe File opened (read-only) \??\q: horrarcjjo.exe File opened (read-only) \??\z: horrarcjjo.exe File opened (read-only) \??\t: guvsgbqo.exe File opened (read-only) \??\n: horrarcjjo.exe File opened (read-only) \??\g: horrarcjjo.exe File opened (read-only) \??\b: guvsgbqo.exe File opened (read-only) \??\w: guvsgbqo.exe File opened (read-only) \??\y: horrarcjjo.exe File opened (read-only) \??\i: guvsgbqo.exe File opened (read-only) \??\q: guvsgbqo.exe File opened (read-only) \??\b: guvsgbqo.exe File opened (read-only) \??\q: guvsgbqo.exe File opened (read-only) \??\r: guvsgbqo.exe File opened (read-only) \??\t: guvsgbqo.exe File opened (read-only) \??\x: guvsgbqo.exe File opened (read-only) \??\y: guvsgbqo.exe File opened (read-only) \??\k: horrarcjjo.exe File opened (read-only) \??\n: guvsgbqo.exe File opened (read-only) \??\h: guvsgbqo.exe File opened (read-only) \??\p: guvsgbqo.exe File opened (read-only) \??\v: guvsgbqo.exe File opened (read-only) \??\b: horrarcjjo.exe File opened (read-only) \??\e: horrarcjjo.exe File opened (read-only) \??\a: guvsgbqo.exe File opened (read-only) \??\s: guvsgbqo.exe File opened (read-only) \??\u: guvsgbqo.exe File opened (read-only) \??\l: horrarcjjo.exe File opened (read-only) \??\p: horrarcjjo.exe File opened (read-only) \??\t: horrarcjjo.exe File opened (read-only) \??\v: horrarcjjo.exe File opened (read-only) \??\u: guvsgbqo.exe File opened (read-only) \??\n: guvsgbqo.exe File opened (read-only) \??\y: guvsgbqo.exe File opened (read-only) \??\w: horrarcjjo.exe - Modifies WinLogon 2 TTPs 2 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\SFCScan = "0" horrarcjjo.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\SFCDisable = "4294967197" horrarcjjo.exe - AutoIT Executable 3 IoCs
AutoIT scripts compiled to PE executables.
resource yara_rule behavioral2/memory/3412-0-0x0000000000400000-0x0000000000496000-memory.dmp autoit_exe behavioral2/files/0x0007000000023210-19.dat autoit_exe behavioral2/files/0x0007000000023213-5.dat autoit_exe - Drops file in System32 directory 13 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\horrarcjjo.exe a5341181798e270087fb6aa947a31ec4.exe File opened for modification C:\Windows\SysWOW64\nlrgrsbxkiqwexk.exe a5341181798e270087fb6aa947a31ec4.exe File opened for modification C:\Windows\SysWOW64\guvsgbqo.exe a5341181798e270087fb6aa947a31ec4.exe File created C:\Windows\SysWOW64\dfagdrlgekjkq.exe a5341181798e270087fb6aa947a31ec4.exe File opened for modification C:\Windows\SysWOW64\dfagdrlgekjkq.exe a5341181798e270087fb6aa947a31ec4.exe File created \??\c:\Windows\SysWOW64\MSDRM\MsoIrmProtector.doc.exe guvsgbqo.exe File opened for modification \??\c:\Windows\SysWOW64\MSDRM\MsoIrmProtector.doc.exe guvsgbqo.exe File created C:\Windows\SysWOW64\horrarcjjo.exe a5341181798e270087fb6aa947a31ec4.exe File opened for modification \??\c:\Windows\SysWOW64\MSDRM\MsoIrmProtector.doc.exe guvsgbqo.exe File created C:\Windows\SysWOW64\nlrgrsbxkiqwexk.exe a5341181798e270087fb6aa947a31ec4.exe File created C:\Windows\SysWOW64\guvsgbqo.exe a5341181798e270087fb6aa947a31ec4.exe File opened for modification C:\Windows\SysWOW64\msvbvm60.dll horrarcjjo.exe File created \??\c:\Windows\SysWOW64\MSDRM\MsoIrmProtector.doc.exe guvsgbqo.exe - Drops file in Program Files directory 15 IoCs
description ioc Process File opened for modification C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLN.nal guvsgbqo.exe File created \??\c:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLN.DOC.exe guvsgbqo.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLN.nal guvsgbqo.exe File created \??\c:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLV.DOC.exe guvsgbqo.exe File opened for modification \??\c:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLV.DOC.exe guvsgbqo.exe File created \??\c:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLN.DOC.exe guvsgbqo.exe File opened for modification \??\c:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLN.DOC.exe guvsgbqo.exe File opened for modification \??\c:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLV.DOC.exe guvsgbqo.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLV.nal guvsgbqo.exe File opened for modification \??\c:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLN.DOC.exe guvsgbqo.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLN.DOC.exe guvsgbqo.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLV.DOC.exe guvsgbqo.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLN.DOC.exe guvsgbqo.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLV.nal guvsgbqo.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLV.DOC.exe guvsgbqo.exe - Drops file in Windows directory 11 IoCs
description ioc Process File opened for modification C:\Windows\mydoc.rtf a5341181798e270087fb6aa947a31ec4.exe File created \??\c:\Windows\WinSxS\amd64_microsoft-windows-r..t-office-protectors_31bf3856ad364e35_10.0.19041.1_none_c3bc3dbd94da3c61\MsoIrmProtector.doc.exe guvsgbqo.exe File opened for modification \??\c:\Windows\WinSxS\amd64_microsoft-windows-r..t-office-protectors_31bf3856ad364e35_10.0.19041.1_none_c3bc3dbd94da3c61\MsoIrmProtector.doc.exe guvsgbqo.exe File opened for modification \??\c:\Windows\WinSxS\amd64_microsoft-windows-r..t-office-protectors_31bf3856ad364e35_10.0.19041.746_none_ebc47b06544bfaab\MsoIrmProtector.doc.exe guvsgbqo.exe File opened for modification \??\c:\Windows\WinSxS\amd64_microsoft-windows-r..t-office-protectors_31bf3856ad364e35_10.0.19041.746_none_ebc47b06544bfaab\MsoIrmProtector.doc.exe guvsgbqo.exe File opened for modification C:\Windows\mydoc.rtf WINWORD.EXE File created C:\Windows\~$mydoc.rtf WINWORD.EXE File created \??\c:\Windows\WinSxS\amd64_microsoft-windows-r..t-office-protectors_31bf3856ad364e35_10.0.19041.1_none_c3bc3dbd94da3c61\MsoIrmProtector.doc.exe guvsgbqo.exe File opened for modification \??\c:\Windows\WinSxS\amd64_microsoft-windows-r..t-office-protectors_31bf3856ad364e35_10.0.19041.1_none_c3bc3dbd94da3c61\MsoIrmProtector.doc.exe guvsgbqo.exe File created \??\c:\Windows\WinSxS\amd64_microsoft-windows-r..t-office-protectors_31bf3856ad364e35_10.0.19041.746_none_ebc47b06544bfaab\MsoIrmProtector.doc.exe guvsgbqo.exe File created \??\c:\Windows\WinSxS\amd64_microsoft-windows-r..t-office-protectors_31bf3856ad364e35_10.0.19041.746_none_ebc47b06544bfaab\MsoIrmProtector.doc.exe guvsgbqo.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString WINWORD.EXE - Enumerates system info in registry 2 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU WINWORD.EXE - Modifies registry class 20 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\CLV.Classes\Com2 = "6ABBFAB8FE16F1E7840B3A4286993E99B0FB02FD4269023EE1CB45E808A1" a5341181798e270087fb6aa947a31ec4.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\CLV.Classes\Com3 = "2FB5B02F4493389A53C9BAD033EDD7C9" a5341181798e270087fb6aa947a31ec4.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\CLV.Classes\Com4 = "7EF5FFF84858856F913CD65A7DE0BD95E137593567366335D6EC" a5341181798e270087fb6aa947a31ec4.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.WSH\ = "txtfile" horrarcjjo.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.reg horrarcjjo.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\CLV.Classes\Com1 = "33322C779D5282226A4677D270252CAD7D8464D6" a5341181798e270087fb6aa947a31ec4.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\CLV.Classes\StartCom2 = "184CC60914E4DBBEB8BE7C93EC9434C7" a5341181798e270087fb6aa947a31ec4.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.bat\ = "txtfile" horrarcjjo.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.wsh horrarcjjo.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.wsc horrarcjjo.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.wsc\ = "txtfile" horrarcjjo.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.vbs\ = "txtfile" horrarcjjo.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.wsf horrarcjjo.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.vbs horrarcjjo.exe Key created \REGISTRY\MACHINE\Software\Classes\CLV.Classes a5341181798e270087fb6aa947a31ec4.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\CLV.Classes\StartCom1 = "E7846BB6FE6621D1D20FD0A08A7E9117" a5341181798e270087fb6aa947a31ec4.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.bat horrarcjjo.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.WSF\ = "txtfile" horrarcjjo.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.reg\ = "txtfile" horrarcjjo.exe Key created \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000_Classes\Local Settings a5341181798e270087fb6aa947a31ec4.exe - Suspicious behavior: AddClipboardFormatListener 2 IoCs
pid Process 3516 WINWORD.EXE 3516 WINWORD.EXE - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 3412 a5341181798e270087fb6aa947a31ec4.exe 3412 a5341181798e270087fb6aa947a31ec4.exe 3412 a5341181798e270087fb6aa947a31ec4.exe 3412 a5341181798e270087fb6aa947a31ec4.exe 3412 a5341181798e270087fb6aa947a31ec4.exe 3412 a5341181798e270087fb6aa947a31ec4.exe 3412 a5341181798e270087fb6aa947a31ec4.exe 3412 a5341181798e270087fb6aa947a31ec4.exe 3412 a5341181798e270087fb6aa947a31ec4.exe 3412 a5341181798e270087fb6aa947a31ec4.exe 3412 a5341181798e270087fb6aa947a31ec4.exe 3412 a5341181798e270087fb6aa947a31ec4.exe 3412 a5341181798e270087fb6aa947a31ec4.exe 3412 a5341181798e270087fb6aa947a31ec4.exe 3412 a5341181798e270087fb6aa947a31ec4.exe 3412 a5341181798e270087fb6aa947a31ec4.exe 544 nlrgrsbxkiqwexk.exe 544 nlrgrsbxkiqwexk.exe 544 nlrgrsbxkiqwexk.exe 544 nlrgrsbxkiqwexk.exe 544 nlrgrsbxkiqwexk.exe 544 nlrgrsbxkiqwexk.exe 3540 dfagdrlgekjkq.exe 544 nlrgrsbxkiqwexk.exe 544 nlrgrsbxkiqwexk.exe 3540 dfagdrlgekjkq.exe 3540 dfagdrlgekjkq.exe 3540 dfagdrlgekjkq.exe 3540 dfagdrlgekjkq.exe 3540 dfagdrlgekjkq.exe 3540 dfagdrlgekjkq.exe 3540 dfagdrlgekjkq.exe 3540 dfagdrlgekjkq.exe 3540 dfagdrlgekjkq.exe 3540 dfagdrlgekjkq.exe 3540 dfagdrlgekjkq.exe 544 nlrgrsbxkiqwexk.exe 544 nlrgrsbxkiqwexk.exe 4672 horrarcjjo.exe 4672 horrarcjjo.exe 4672 horrarcjjo.exe 4672 horrarcjjo.exe 4672 horrarcjjo.exe 4672 horrarcjjo.exe 4672 horrarcjjo.exe 4672 horrarcjjo.exe 4672 horrarcjjo.exe 4672 horrarcjjo.exe 1944 guvsgbqo.exe 1944 guvsgbqo.exe 1944 guvsgbqo.exe 1944 guvsgbqo.exe 1944 guvsgbqo.exe 1944 guvsgbqo.exe 1944 guvsgbqo.exe 1944 guvsgbqo.exe 544 nlrgrsbxkiqwexk.exe 544 nlrgrsbxkiqwexk.exe 1972 guvsgbqo.exe 1972 guvsgbqo.exe 1972 guvsgbqo.exe 1972 guvsgbqo.exe 1972 guvsgbqo.exe 1972 guvsgbqo.exe - Suspicious use of FindShellTrayWindow 18 IoCs
pid Process 3412 a5341181798e270087fb6aa947a31ec4.exe 3412 a5341181798e270087fb6aa947a31ec4.exe 3412 a5341181798e270087fb6aa947a31ec4.exe 544 nlrgrsbxkiqwexk.exe 4672 horrarcjjo.exe 544 nlrgrsbxkiqwexk.exe 4672 horrarcjjo.exe 544 nlrgrsbxkiqwexk.exe 4672 horrarcjjo.exe 3540 dfagdrlgekjkq.exe 3540 dfagdrlgekjkq.exe 3540 dfagdrlgekjkq.exe 1944 guvsgbqo.exe 1944 guvsgbqo.exe 1944 guvsgbqo.exe 1972 guvsgbqo.exe 1972 guvsgbqo.exe 1972 guvsgbqo.exe - Suspicious use of SendNotifyMessage 18 IoCs
pid Process 3412 a5341181798e270087fb6aa947a31ec4.exe 3412 a5341181798e270087fb6aa947a31ec4.exe 3412 a5341181798e270087fb6aa947a31ec4.exe 544 nlrgrsbxkiqwexk.exe 4672 horrarcjjo.exe 544 nlrgrsbxkiqwexk.exe 4672 horrarcjjo.exe 544 nlrgrsbxkiqwexk.exe 4672 horrarcjjo.exe 3540 dfagdrlgekjkq.exe 3540 dfagdrlgekjkq.exe 3540 dfagdrlgekjkq.exe 1944 guvsgbqo.exe 1944 guvsgbqo.exe 1944 guvsgbqo.exe 1972 guvsgbqo.exe 1972 guvsgbqo.exe 1972 guvsgbqo.exe - Suspicious use of SetWindowsHookEx 7 IoCs
pid Process 3516 WINWORD.EXE 3516 WINWORD.EXE 3516 WINWORD.EXE 3516 WINWORD.EXE 3516 WINWORD.EXE 3516 WINWORD.EXE 3516 WINWORD.EXE - Suspicious use of WriteProcessMemory 17 IoCs
description pid Process procid_target PID 3412 wrote to memory of 4672 3412 a5341181798e270087fb6aa947a31ec4.exe 26 PID 3412 wrote to memory of 4672 3412 a5341181798e270087fb6aa947a31ec4.exe 26 PID 3412 wrote to memory of 4672 3412 a5341181798e270087fb6aa947a31ec4.exe 26 PID 3412 wrote to memory of 544 3412 a5341181798e270087fb6aa947a31ec4.exe 25 PID 3412 wrote to memory of 544 3412 a5341181798e270087fb6aa947a31ec4.exe 25 PID 3412 wrote to memory of 544 3412 a5341181798e270087fb6aa947a31ec4.exe 25 PID 3412 wrote to memory of 1944 3412 a5341181798e270087fb6aa947a31ec4.exe 22 PID 3412 wrote to memory of 1944 3412 a5341181798e270087fb6aa947a31ec4.exe 22 PID 3412 wrote to memory of 1944 3412 a5341181798e270087fb6aa947a31ec4.exe 22 PID 3412 wrote to memory of 3540 3412 a5341181798e270087fb6aa947a31ec4.exe 19 PID 3412 wrote to memory of 3540 3412 a5341181798e270087fb6aa947a31ec4.exe 19 PID 3412 wrote to memory of 3540 3412 a5341181798e270087fb6aa947a31ec4.exe 19 PID 3412 wrote to memory of 3516 3412 a5341181798e270087fb6aa947a31ec4.exe 20 PID 3412 wrote to memory of 3516 3412 a5341181798e270087fb6aa947a31ec4.exe 20 PID 4672 wrote to memory of 1972 4672 horrarcjjo.exe 23 PID 4672 wrote to memory of 1972 4672 horrarcjjo.exe 23 PID 4672 wrote to memory of 1972 4672 horrarcjjo.exe 23
Processes
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C:\Users\Admin\AppData\Local\Temp\a5341181798e270087fb6aa947a31ec4.exe"C:\Users\Admin\AppData\Local\Temp\a5341181798e270087fb6aa947a31ec4.exe"1⤵
- Checks computer location settings
- Drops file in System32 directory
- Drops file in Windows directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:3412 -
C:\Windows\SysWOW64\dfagdrlgekjkq.exedfagdrlgekjkq.exe2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:3540
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C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Windows\mydoc.rtf" /o ""2⤵
- Drops file in Windows directory
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:3516
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C:\Windows\SysWOW64\guvsgbqo.exeguvsgbqo.exe2⤵
- Executes dropped EXE
- Enumerates connected drives
- Drops file in System32 directory
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1944
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C:\Windows\SysWOW64\nlrgrsbxkiqwexk.exenlrgrsbxkiqwexk.exe2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:544
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C:\Windows\SysWOW64\horrarcjjo.exehorrarcjjo.exe2⤵
- Modifies visibility of file extensions in Explorer
- Modifies visiblity of hidden/system files in Explorer
- Windows security bypass
- Disables RegEdit via registry modification
- Executes dropped EXE
- Windows security modification
- Enumerates connected drives
- Modifies WinLogon
- Drops file in System32 directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:4672
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C:\Windows\SysWOW64\guvsgbqo.exeC:\Windows\system32\guvsgbqo.exe1⤵
- Executes dropped EXE
- Enumerates connected drives
- Drops file in System32 directory
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1972
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Defense Evasion
Hide Artifacts
2Hidden Files and Directories
2Impair Defenses
2Disable or Modify Tools
2Modify Registry
6Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\horrarcjjo.exe
- Size 512KB
- SHA256 f1503202ac790ee925f3988e396d2e2be66ab00e756e4021dc28087723b5ab61
- MD5 eb661cd6543c1aabd4b5d8a50ed93ebc
- SHA1 4650a436a798c100d38becc704138914b1ce2eea
- SHA512 f98cd3e77a1c09c73852fbb4359a75b6ea6ee8e01d24c7f02a62ff46fb13d5fe17727e75e997c45ff50fce2ae64e96c2d65c8cb90a2210239706e7ee3b3a453b
- SSDEEP 6144:1VY0W0sVVZ/dkq5BCoFaJ2i5Lf24C07N5OvSLTUF6pQxI6Upe2cBnTu19bcodj6B:1gDhdkq5BCoC5LfWSLTUQpr2Zu19Qm52
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Windows\SysWOW64\nlrgrsbxkiqwexk.exe
- Size 512KB
- SHA256 68a4a5c25c121feac98016387b4333fa8ad6c710a42a89abb5b080e8acc14360
- MD5 1647d7b0d931126f257a2760520c04ac
- SHA1 472af2f777cccffbf664727f76f2834f5079234d
- SHA512 c43535c98a6c9dd869a658c69c4d52d3ee5f65ff6d3eb0b4220d60138c2d7b723575dd3e2f3ae04bc4dcb68fc4cf37b630a9017783acc27b60eb233ee1c48870
- SSDEEP 6144:1VY0W0sVVZ/dkq5BCoFaJ2i5Lf24C07N5OvSLTUF6pQxI6Upe2cBnTu19bcodj6F:1gDhdkq5BCoC5LfWSLTUQpr2Zu19Qm56
- MD5 SHA1 SHA512 SSDEEP