e25b3b34829fc85ae65f2e1ad0e4fe31750f87e13836e92edb0c36384725c56d

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
10-03-2024 00:54

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General

Target

bd3cc679295119cf74167bd2c5e5fe29.exe
Size

87KB
MD5

bd3cc679295119cf74167bd2c5e5fe29
SHA1

5e77d8317c638cd8c366a473ad246058d806ce32
SHA256

e25b3b34829fc85ae65f2e1ad0e4fe31750f87e13836e92edb0c36384725c56d
SHA512

670dfdc49bb8370b8fe0001c70e674c4464298192623ef6fcff60d7952e882b29677bc4352ce17b915384dec57f347efdae7fb2b35c911ebeac196a86dc46bda
SSDEEP

1536:/3e5v4q9Kn7+CGl95bWQD191+1U9d0SloLigiXk+52BSPRUWwmIQrob:/ee1cXWQD1/+e9dfGigiX752BSPRUWxa

Score

10^/10

evasion persistence upx

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = ",C:\\Windows\\SysWOW64\\uoyzsydz.exe,"	uoyzsydz.exe

Disables Task Manager via registry modification
evasion

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation	bd3cc679295119cf74167bd2c5e5fe29.exe

Executes dropped EXE 1 IoCs

pid	Process
4540	uoyzsydz.exe

UPX packed file 18 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2256-0-0x0000000000400000-0x0000000000622000-memory.dmp	upx
behavioral2/files/0x000700000002323d-7.dat	upx
behavioral2/memory/4540-17-0x0000000000400000-0x0000000000622000-memory.dmp	upx
behavioral2/memory/2256-20-0x0000000000400000-0x0000000000622000-memory.dmp	upx
behavioral2/memory/4540-26-0x0000000000400000-0x0000000000622000-memory.dmp	upx
behavioral2/memory/4540-27-0x0000000000400000-0x0000000000622000-memory.dmp	upx
behavioral2/memory/4540-32-0x0000000000400000-0x0000000000622000-memory.dmp	upx
behavioral2/memory/4540-35-0x0000000000400000-0x0000000000622000-memory.dmp	upx
behavioral2/memory/4540-36-0x0000000000400000-0x0000000000622000-memory.dmp	upx
behavioral2/memory/4540-37-0x0000000000400000-0x0000000000622000-memory.dmp	upx
behavioral2/memory/4540-48-0x0000000000400000-0x0000000000622000-memory.dmp	upx
behavioral2/memory/4540-49-0x0000000000400000-0x0000000000622000-memory.dmp	upx
behavioral2/memory/4540-50-0x0000000000400000-0x0000000000622000-memory.dmp	upx
behavioral2/memory/4540-51-0x0000000000400000-0x0000000000622000-memory.dmp	upx
behavioral2/memory/4540-52-0x0000000000400000-0x0000000000622000-memory.dmp	upx
behavioral2/memory/4540-53-0x0000000000400000-0x0000000000622000-memory.dmp	upx
behavioral2/memory/4540-54-0x0000000000400000-0x0000000000622000-memory.dmp	upx
behavioral2/memory/4540-55-0x0000000000400000-0x0000000000622000-memory.dmp	upx

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\hljwugsf.bin	bd3cc679295119cf74167bd2c5e5fe29.exe
File opened for modification	C:\Windows\SysWOW64\uoyzsydz.exe	uoyzsydz.exe
File created	C:\Windows\SysWOW64\uoyzsydz.exe	bd3cc679295119cf74167bd2c5e5fe29.exe
File opened for modification	C:\Windows\SysWOW64\uoyzsydz.exe	bd3cc679295119cf74167bd2c5e5fe29.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies Internet Explorer settings 1 TTPs 37 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb01000000279dbe2cb9d5c4499f659dc4fb2861cc00000000020000000000106600000001000020000000730a2c16d6e5a9ee8a9fecc5be316aff80657d673a2d9a201c7a9ddeee2ffa54000000000e800000000200002000000018404519435bd8bfbb03d0bae4e18faa5b27830813a3e14c76d3997da5ae24b52000000082ac22f225bc7cfd62d362ee493eac81c5a51481698c1719b1504060967d726040000000c512fd1a7830edf6362ad97a54bca39960d8141b4d2f0d746cd5098a3bae9426d4346e294a05d20a29fa9430603d378777eaa9297394b9bc1bb32f31fc07b86a	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Internet Explorer\GPU	IEXPLORE.EXE
Set value (data)	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 5003e28c8572da01	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2346288664"	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\LastProcessed = 20f8f98c8572da01	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NTPFirstRun = "1"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\TabbedBrowsing\NewTabPage\DecayDateQueue = 01000000d08c9ddf0115d1118c7a00c04fc297eb01000000279dbe2cb9d5c4499f659dc4fb2861cc00000000020000000000106600000001000020000000c50696f5f6e4d6b6fbc13d4bad0c6edd13334bbcd4472c5c36b52019d118cec8000000000e800000000200002000000026fd325c282d62b0ee923a9f8a631d54e8ed63c5254dec3ec74f73a14ad161d3200000001e44153f66ebc14a90b80786ca4e1bf760fc66758750d8ae52162fca06a6217240000000a6e0678d904c4eeeb62fe7376854516e5c9b3c1feb3e8990ebb6646c345b5098e43991853cc2e63b1681b979db67037ee3ec917efd49ce6f273cb5efcfcfd5ca	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31093381"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "416797029"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31093381"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Internet Explorer\VersionManager	IEXPLORE.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\GPU\AdapterInfo = "vendorId=\"0x10de\",deviceID=\"0x8c\",subSysID=\"0x0\",revision=\"0x0\",version=\"10.0.19041.546\"hypervisor=\"No Hypervisor (No SLAT)\""	IEXPLORE.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "2336599904"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2336599904"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31093381"	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{B6DE84A0-DE78-11EE-96FD-62D9003AE027} = "0"	iexplore.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2168	iexplore.exe

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
2256	bd3cc679295119cf74167bd2c5e5fe29.exe
4540	uoyzsydz.exe
2168	iexplore.exe
2168	iexplore.exe
4180	IEXPLORE.EXE
4180	IEXPLORE.EXE
4180	IEXPLORE.EXE
4180	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2256 wrote to memory of 4540	2256	bd3cc679295119cf74167bd2c5e5fe29.exe	91
PID 2256 wrote to memory of 4540	2256	bd3cc679295119cf74167bd2c5e5fe29.exe	91
PID 2256 wrote to memory of 4540	2256	bd3cc679295119cf74167bd2c5e5fe29.exe	91
PID 2256 wrote to memory of 2168	2256	bd3cc679295119cf74167bd2c5e5fe29.exe	92
PID 2256 wrote to memory of 2168	2256	bd3cc679295119cf74167bd2c5e5fe29.exe	92
PID 2168 wrote to memory of 4180	2168	iexplore.exe	93
PID 2168 wrote to memory of 4180	2168	iexplore.exe	93
PID 2168 wrote to memory of 4180	2168	iexplore.exe	93

System policy modification 1 TTPs 2 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System	uoyzsydz.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableTaskMgr = "1"	uoyzsydz.exe

C:\Users\Admin\AppData\Local\Temp\bd3cc679295119cf74167bd2c5e5fe29.exe
"C:\Users\Admin\AppData\Local\Temp\bd3cc679295119cf74167bd2c5e5fe29.exe"
1⤵
- Checks computer location settings
- Drops file in System32 directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2256
- C:\Windows\SysWOW64\uoyzsydz.exe
  "C:\Windows\system32\uoyzsydz.exe" start
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of SetWindowsHookEx
  - System policy modification
  PID:4540
- C:\Program Files\Internet Explorer\iexplore.exe
  "C:\Program Files\Internet Explorer\iexplore.exe" http://mycashloads.com/newuser.php?saff=373.0
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2168
- - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
    "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2168 CREDAT:17410 /prefetch:2
    3⤵
    - Modifies Internet Explorer settings
    - Suspicious use of SetWindowsHookEx
    PID:4180

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\RP7H3V5Z\suggestions[1].en-US

Filesize
17KB

MD5
5a34cb996293fde2cb7a4ac89587393a

SHA1
3c96c993500690d1a77873cd62bc639b3a10653f

SHA256
c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

SHA512
e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

Download Submit
C:\Windows\SysWOW64\uoyzsydz.exe

Filesize
87KB

MD5
bd3cc679295119cf74167bd2c5e5fe29

SHA1
5e77d8317c638cd8c366a473ad246058d806ce32

SHA256
e25b3b34829fc85ae65f2e1ad0e4fe31750f87e13836e92edb0c36384725c56d

SHA512
670dfdc49bb8370b8fe0001c70e674c4464298192623ef6fcff60d7952e882b29677bc4352ce17b915384dec57f347efdae7fb2b35c911ebeac196a86dc46bda

Download Submit
memory/2256-0-0x0000000000400000-0x0000000000622000-memory.dmp

Filesize
2.1MB

Download
memory/2256-20-0x0000000000400000-0x0000000000622000-memory.dmp

Filesize
2.1MB

Download
memory/4540-36-0x0000000000400000-0x0000000000622000-memory.dmp

Filesize
2.1MB

Download
memory/4540-48-0x0000000000400000-0x0000000000622000-memory.dmp

Filesize
2.1MB

Download
memory/4540-32-0x0000000000400000-0x0000000000622000-memory.dmp

Filesize
2.1MB

Download
memory/4540-35-0x0000000000400000-0x0000000000622000-memory.dmp

Filesize
2.1MB

Download
memory/4540-26-0x0000000000400000-0x0000000000622000-memory.dmp

Filesize
2.1MB

Download
memory/4540-37-0x0000000000400000-0x0000000000622000-memory.dmp

Filesize
2.1MB

Download
memory/4540-17-0x0000000000400000-0x0000000000622000-memory.dmp

Filesize
2.1MB

Download
memory/4540-27-0x0000000000400000-0x0000000000622000-memory.dmp

Filesize
2.1MB

Download
memory/4540-49-0x0000000000400000-0x0000000000622000-memory.dmp

Filesize
2.1MB

Download
memory/4540-50-0x0000000000400000-0x0000000000622000-memory.dmp

Filesize
2.1MB

Download
memory/4540-51-0x0000000000400000-0x0000000000622000-memory.dmp

Filesize
2.1MB

Download
memory/4540-52-0x0000000000400000-0x0000000000622000-memory.dmp

Filesize
2.1MB

Download
memory/4540-53-0x0000000000400000-0x0000000000622000-memory.dmp

Filesize
2.1MB

Download
memory/4540-54-0x0000000000400000-0x0000000000622000-memory.dmp

Filesize
2.1MB

Download
memory/4540-55-0x0000000000400000-0x0000000000622000-memory.dmp

Filesize
2.1MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads