792a50683eb2d990ccf123198a14af517a90ed388a382557836d606fbe3e5675

General

Target
jaffacakes118_792a50683eb2d990ccf123198a14af517a90ed388a382557836d606fbe3e5675.exe
Size 48KB
Sample260925-2nrv2a1vhs
SHA256 792a50683eb2d990ccf123198a14af517a90ed388a382557836d606fbe3e5675
MD5 a3ee80a0f01903d2757dcb3490b12feb
SHA1 612af006ebc1e813572dfc83f3047caa97d9ec5e
SHA512 db468f9846dd0d02113e8cd35fdb6647bc892ede9cf81460c2605b149790b110ee8b5c0d280cc66050588bb3a5f50f13963e07f68c5cc402d38ea1f3df88e676
SSDEEP 768:bbp7gQlkIW7bCkTLLosa2mzhncHAk3TlSvIfv0DTFF4D3n2u:T6FbCrLzh31YvIWn2u
TLSH
T15B23D00B791E4FF2D5870A750A525A9DE6A20234036E09CCCEE706EFB135A5631BB690
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/0x0007000000016b3a-3.dat	acprotect

Executes dropped EXE 1 IoCs

pid	Process
3196	myInsDll.exe

Loads dropped DLL 2 IoCs

pid	Process
3196	myInsDll.exe
3196	myInsDll.exe

Modifies WinLogon 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\SfcDisable = "4294967197"	myInsDll.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Unamsmqnws.dat	jaffacakes118_792a50683eb2d990ccf123198a14af517a90ed388a382557836d606fbe3e5675.exe
File created	C:\Windows\SysWOW64\dnfwg.dll	jaffacakes118_792a50683eb2d990ccf123198a14af517a90ed388a382557836d606fbe3e5675.exe
File created	C:\Windows\SysWOW64\myInsDll.exe	jaffacakes118_792a50683eb2d990ccf123198a14af517a90ed388a382557836d606fbe3e5675.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/0x0007000000016b3a-3.dat	upx
behavioral2/memory/3196-5-0x0000000010000000-0x0000000010108000-memory.dmp	upx
behavioral2/memory/3196-7-0x0000000010000000-0x0000000010108000-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
4956	3196	WerFault.exe	88

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_792a50683eb2d990ccf123198a14af517a90ed388a382557836d606fbe3e5675.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 WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 6048 wrote to memory of 3196	6048	jaffacakes118_792a50683eb2d990ccf123198a14af517a90ed388a382557836d606fbe3e5675.exe	88
PID 3196 wrote to memory of 5020	3196	myInsDll.exe	89

C:\Users\Admin\AppData\Local\Temp\jaffacakes118_792a50683eb2d990ccf123198a14af517a90ed388a382557836d606fbe3e5675.exe
"C:\Users\Admin\AppData\Local\Temp\jaffacakes118_792a50683eb2d990ccf123198a14af517a90ed388a382557836d606fbe3e5675.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:6048
- C:\Windows\SysWOW64\myInsDll.exe
  "C:\Windows\system32\myInsDll.exe" dnfwg.dll,abcdefghjk C:\Users\Admin\AppData\Local\Temp\jaffacakes118_792a50683eb2d990ccf123198a14af517a90ed388a382557836d606fbe3e5675.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Modifies WinLogon
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3196
- - C:\Windows\SysWOW64\sfc.exe
    "C:\Windows\system32\sfc.exe" /REVERT
    3⤵
    - System Location Discovery: System Language Discovery
    PID:5020
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3196 -s 808
    3⤵
    - Program crash
    PID:4956

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 3196 -ip 3196
1⤵
PID:3332

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

dnfwg.dll

Path C:\Windows\SysWOW64\dnfwg.dll
Size 29KB
SHA256 9c5c7310aa498fb61223699360644a4059fa9e5771e3eabecedd62bf160d012b
MD5 9e83abfe8c12cc4b1c161763f694997f
SHA1 fb0ec37087359c0af896455b8924982373a3bcfa
SHA512 2ca70ede27cfd603dcd0c231badea873d91a9c88af904d4fcf218e141e6ab646ded2c044544518cad7c7f2d2bd31f99b3c2f7f476d410f2bae78fe3137e3604f
SSDEEP 768:47gQlkIW7bCkTLLosa2mzhncHAk3TlSvIfv0DTFF4D3n2u:u6FbCrLzh31YvIWn2u
TLSH
T183D2E10B381E4FB7D4431A760792569DE1A20234136F0DCCCDEA06EFB135A5A31EB960
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

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

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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/3196-5-0x0000000010000000-0x0000000010108000-memory.dmp

Download

memory/3196-7-0x0000000010000000-0x0000000010108000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads