6fd3ae7c6a1fd6591826e3e90780a344121fdd2cb16d8bffde1fc6d7ffc41798

General

Target
jaffacakes118_6fd3ae7c6a1fd6591826e3e90780a344121fdd2cb16d8bffde1fc6d7ffc41798.exe
Size 32KB
Sample260925-2mwgtsaa84
SHA256 6fd3ae7c6a1fd6591826e3e90780a344121fdd2cb16d8bffde1fc6d7ffc41798
MD5 55773b08545def2366aa658e22951294
SHA1 895cffb13d5944441e86c31f4c19826600fcab68
SHA512 987110249316fbbae27640b8857b15795c5a87aced93e3ab86f2a8c654ae29928a3933157675900b6adc220dbceffa3baca343b05fe646f27229dd96ad93d0c7
SSDEEP 384:Z5SwwrHQMUmQzG7Ay4w7iRzMWX4dpBrU:3uHRUmoGZ+RMWX4dpBA
TLSH
T146E2AEC377581CB2CB940135129E4EF19B28A53507BCB9C48DEB4397C8B56504ABAE1A
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

discovery persistence upx

Malware Config

Signatures

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000f00000001c47f-4.dat	acprotect

Executes dropped EXE 1 IoCs

pid	Process
2864	myInsDll.exe

Loads dropped DLL 2 IoCs

pid	Process
2864	myInsDll.exe
2864	myInsDll.exe

Modifies WinLogon 2 TTPs 2 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\ins = "fusea.dll,"	myInsDll.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\SfcDisable = "4294967197"	myInsDll.exe

Drops file in System32 directory 5 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\gldas.dat	jaffacakes118_6fd3ae7c6a1fd6591826e3e90780a344121fdd2cb16d8bffde1fc6d7ffc41798.exe
File created	C:\Windows\SysWOW64\cullcoa.dll	jaffacakes118_6fd3ae7c6a1fd6591826e3e90780a344121fdd2cb16d8bffde1fc6d7ffc41798.exe
File created	C:\Windows\SysWOW64\fusea.dll	jaffacakes118_6fd3ae7c6a1fd6591826e3e90780a344121fdd2cb16d8bffde1fc6d7ffc41798.exe
File created	C:\Windows\SysWOW64\myInsDll.exe	jaffacakes118_6fd3ae7c6a1fd6591826e3e90780a344121fdd2cb16d8bffde1fc6d7ffc41798.exe
File created	C:\Windows\SysWOW64\sfc32.dll	myInsDll.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000f00000001c47f-4.dat	upx
behavioral2/memory/2864-6-0x0000000010000000-0x00000000100FF000-memory.dmp	upx
behavioral2/memory/2864-8-0x0000000010000000-0x00000000100FF000-memory.dmp	upx

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2576	2864	WerFault.exe	90

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	jaffacakes118_6fd3ae7c6a1fd6591826e3e90780a344121fdd2cb16d8bffde1fc6d7ffc41798.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	myInsDll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sfc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2864	myInsDll.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 620 wrote to memory of 2864	620	jaffacakes118_6fd3ae7c6a1fd6591826e3e90780a344121fdd2cb16d8bffde1fc6d7ffc41798.exe	90
PID 2864 wrote to memory of 4128	2864	myInsDll.exe	91

C:\Users\Admin\AppData\Local\Temp\jaffacakes118_6fd3ae7c6a1fd6591826e3e90780a344121fdd2cb16d8bffde1fc6d7ffc41798.exe
"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_6fd3ae7c6a1fd6591826e3e90780a344121fdd2cb16d8bffde1fc6d7ffc41798.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:620
- C:\Windows\SysWOW64\myInsDll.exe
  "C:\Windows\system32\myInsDll.exe" fusea.dll,myIns C:\Users\Admin\AppData\Local\Temp\jaffacakes118_6fd3ae7c6a1fd6591826e3e90780a344121fdd2cb16d8bffde1fc6d7ffc41798.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Modifies WinLogon
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2864
- - C:\Windows\SysWOW64\sfc.exe
    "C:\Windows\system32\sfc.exe" /REVERT
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4128
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2864 -s 832
    3⤵
    - Program crash
    PID:2576

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 392 -p 2864 -ip 2864
1⤵
PID:2612

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

fusea.dll

Path C:\Windows\SysWOW64\fusea.dll
Size 11KB
SHA256 ab2fd8eba130bb2f7ffb0c14251313129e02beb02259ac641c1f6c8033e22965
MD5 cb6c40e66609ee53277e483e6ab2c034
SHA1 e362b52956b281c790b83e5eef261d719f892fc4
SHA512 9607c63b37589a815d0e11a4cb4feb76bc2db502f703f5bd6ab09b2015fea0d483882e112a42f8a3236cd834b9f68f6bbbe276a4a46af22f7a0b93d2eef7ab24
SSDEEP 192:K0lbDaMiQzWL5rRx8cmzyaTw7iM9Gz4BqWWX4d4eNBc:KUmQzG7Ay4w7iRzMWX4dpB
TLSH
T1D632AFCAB1845EB5CBA4123652CE0EF1A618B90E0F2CFD91CC6E439B84E175046DFD2A
MD5 SHA1 SHA512 SSDEEP TLSH

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myInsDll.exe

Path C:\Windows\SysWOW64\myInsDll.exe
Size 51KB
SHA256 ce6bb7eddc83762c708d4a41709ae00371dbdc09b2a380f28fa60b1edf917473
MD5 2e068ce2770fde8d1af4cb114b98df1f
SHA1 b6f9c2775babb025b22f915c3047aa627d07c312
SHA512 998d695eb56375e63df7db16740b89deb2cf630ccbead8bcf84a921ec6f4a4f9aef2755b703f7190f332b2008ebcc949363bcf8f392d7d07246c255b5073ed35
SSDEEP 1536:6G9yoVEpHP29I3fbcJboSUge5N+CnC/maz9Rh:8pv2mbcJboce58wvOR
TLSH
T137336C236A0A49B3DFE231780A9D7232526DD862075541F7A61057EAFD243E2EE743CF
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

sfc32.dll

Path C:\Windows\SysWOW64\sfc32.dll
Size 20KB
SHA256 17fba410831c77a2cb36282454cb5b60ca56639e40add124a211e4d8c1f5028d
MD5 16153d3321d5ae42238304b30a367537
SHA1 0a7ee7b3464f6ea2aed2575959b613ac63844919
SHA512 60d38b5593822d7d574b4164d1330af24ed630c75f3061128ba9f54a029ea896ae6ae8f16af764d086c4f38195227b6f69b2f012aacbe66e33b0a35a28758d39
SSDEEP 384:h4WKi+1MvBbXSwWa0TINWe8WL0DBRJz7nR9z29:pKY5WLITt01Pzt9zo
TLSH
T1F5926E92E7280952EDDA6970219CF9573E3C5FD10B0050E79DD6E9941C663C2EE307BE
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/2864-6-0x0000000010000000-0x00000000100FF000-memory.dmp

Download

memory/2864-8-0x0000000010000000-0x00000000100FF000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads