afea77201f91197519e8943c5eb4f4d33ad3f45224f301457929ec7d5f077a27

Analysis

max time kernel
120s
max time network
98s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
25/09/2024, 14:46

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General

Target

afea77201f91197519e8943c5eb4f4d33ad3f45224f301457929ec7d5f077a27N.exe
Size

68KB
MD5

ec1cd4a94b0c9b69edea2c865abc3360
SHA1

3e87a92f2d0cad8936e40db83a61a91279d76533
SHA256

afea77201f91197519e8943c5eb4f4d33ad3f45224f301457929ec7d5f077a27
SHA512

f9fff2882559a9e2dc15edad1ea2deadcbaccc2efdb6a8629200143bf510d51d38487de27a044401c417ab0d261c277dfc2057ab006c2ee964e8bf3d35ce1d86
SSDEEP

1536:PK+YdvHwR2Lg8BXdfbupkWtNIgZZ5qnTyu2ho6A0d:PxYdIR2FdCCSN1IGu2hoS

Score

7^/10

discovery persistence upx

Malware Config

Signatures

Loads dropped DLL 2 IoCs

pid	Process
1644	afea77201f91197519e8943c5eb4f4d33ad3f45224f301457929ec7d5f077a27N.exe
3356	rundll32.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\MSServer = "rundll32.exe C:\\Windows\\system32\\ljJCvVNg.dll,#1"	rundll32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\xxywVpNG.dll	afea77201f91197519e8943c5eb4f4d33ad3f45224f301457929ec7d5f077a27N.exe
File created	C:\Windows\SysWOW64\xxywVpNG.dll	afea77201f91197519e8943c5eb4f4d33ad3f45224f301457929ec7d5f077a27N.exe
File created	C:\Windows\SysWOW64\ljJCvVNg.dll	afea77201f91197519e8943c5eb4f4d33ad3f45224f301457929ec7d5f077a27N.exe
File opened for modification	C:\Windows\SysWOW64\ljJCvVNg.dll	afea77201f91197519e8943c5eb4f4d33ad3f45224f301457929ec7d5f077a27N.exe

UPX packed file 9 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/1644-2-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1644-1-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1644-5-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1644-12-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/1644-13-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/1644-20-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/3356-33-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/3356-30-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/3356-35-0x0000000010000000-0x0000000010014000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	afea77201f91197519e8943c5eb4f4d33ad3f45224f301457929ec7d5f077a27N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{78896B19-F11B-4BAB-8E73-64E1741A1B27}	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{78896B19-F11B-4BAB-8E73-64E1741A1B27}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{78896B19-F11B-4BAB-8E73-64E1741A1B27}\InprocServer32\ = "C:\\Windows\\SysWow64\\ljJCvVNg.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{78896B19-F11B-4BAB-8E73-64E1741A1B27}\InprocServer32\ThreadingModel = "Both"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1644	afea77201f91197519e8943c5eb4f4d33ad3f45224f301457929ec7d5f077a27N.exe
1644	afea77201f91197519e8943c5eb4f4d33ad3f45224f301457929ec7d5f077a27N.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe
3356	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1644	afea77201f91197519e8943c5eb4f4d33ad3f45224f301457929ec7d5f077a27N.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1644	afea77201f91197519e8943c5eb4f4d33ad3f45224f301457929ec7d5f077a27N.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1644 wrote to memory of 608	1644	afea77201f91197519e8943c5eb4f4d33ad3f45224f301457929ec7d5f077a27N.exe	5
PID 1644 wrote to memory of 3356	1644	afea77201f91197519e8943c5eb4f4d33ad3f45224f301457929ec7d5f077a27N.exe	90
PID 1644 wrote to memory of 3356	1644	afea77201f91197519e8943c5eb4f4d33ad3f45224f301457929ec7d5f077a27N.exe	90
PID 1644 wrote to memory of 3356	1644	afea77201f91197519e8943c5eb4f4d33ad3f45224f301457929ec7d5f077a27N.exe	90
PID 1644 wrote to memory of 1504	1644	afea77201f91197519e8943c5eb4f4d33ad3f45224f301457929ec7d5f077a27N.exe	91
PID 1644 wrote to memory of 1504	1644	afea77201f91197519e8943c5eb4f4d33ad3f45224f301457929ec7d5f077a27N.exe	91
PID 1644 wrote to memory of 1504	1644	afea77201f91197519e8943c5eb4f4d33ad3f45224f301457929ec7d5f077a27N.exe	91

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:608

C:\Users\Admin\AppData\Local\Temp\afea77201f91197519e8943c5eb4f4d33ad3f45224f301457929ec7d5f077a27N.exe
"C:\Users\Admin\AppData\Local\Temp\afea77201f91197519e8943c5eb4f4d33ad3f45224f301457929ec7d5f077a27N.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1644
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Windows\system32\ljJCvVNg.dll,a
  2⤵
  - Loads dropped DLL
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  PID:3356
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\removalfile.bat "C:\Users\Admin\AppData\Local\Temp\afea77201f91197519e8943c5eb4f4d33ad3f45224f301457929ec7d5f077a27N.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1504

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\removalfile.bat

Filesize
43B

MD5
9a7ef09167a6f4433681b94351509043

SHA1
259b1375ed8e84943ca1d42646bb416325c89e12

SHA256
d5739a0510d89da572eb0b0d394d4fb4dd361cd9ee0144b9b31c590df93c3be7

SHA512
96b84cd88a0e4b7c1122af3ed6ce5edf0a9a4e9bf79575eadfac16b2c46f1278d57755d29f21d7c6dcb4403be24b7ac7da4837c6cc9c602342a8f2b8e54883df

Download Submit
C:\Windows\SysWOW64\xxywVpNG.dll

Filesize
41KB

MD5
0f905c1e7cf0cfa272b7bd2de1b86fbd

SHA1
510eaf2c315cd56ccc02ec42a89543e3f7ec7be8

SHA256
ac9219f88464a7af87b4a7b94b4534bfc02050a8abc2027cded874cb03098164

SHA512
13328be6a477867d8f22341c98a8f4cae3cdbacb4f4b3f705040bd527ea49c159b1e05e2533529ce6cb205df445221f97c4950b8b6de396d4233a922cd91b909

Download Submit
memory/1644-12-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/1644-13-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/1644-5-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1644-4-0x0000000000406000-0x0000000000411000-memory.dmp

Filesize
44KB

Download
memory/1644-11-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/1644-3-0x0000000002160000-0x000000000216F000-memory.dmp

Filesize
60KB

Download
memory/1644-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1644-1-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1644-18-0x0000000000406000-0x0000000000411000-memory.dmp

Filesize
44KB

Download
memory/1644-20-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/1644-2-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3356-33-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/3356-32-0x000000001000E000-0x0000000010013000-memory.dmp

Filesize
20KB

Download
memory/3356-30-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/3356-31-0x0000000000BD0000-0x0000000000BD9000-memory.dmp

Filesize
36KB

Download
memory/3356-35-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download