fd9567c35c75e8378b6e93bc4830a01f32cd989cb634238cad4d791d44eb1f78

General

Target
119c4db5124980e166a863654dfe9fbd_JaffaCakes118.exe
Size 308KB
Sample241004-drywra1frj
SHA256 fd9567c35c75e8378b6e93bc4830a01f32cd989cb634238cad4d791d44eb1f78
MD5 119c4db5124980e166a863654dfe9fbd
SHA1 3a773d8e33ce8cce60232f4f70f521e883f52a26
SHA512 04d79306cfac3a083bdb6ae09ebae78122435f3641859bbbabf3684c4d121c3339fbbc3c94b1d11b1265fea3ab5c15936c3f17ebb45e474684ad2b828618054b
SSDEEP 6144:zbwA9xEbcqOjl+HzH+OZm5yUz8XEnqIuYyABEzjcgyy7+d3BHrVfGwdw:XwA9Cgqt+J5lz8XEnZyCEznCx1r9dG
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

discovery evasion persistence trojan upx

Malware Config

Signatures

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\LQTQASFDT = "C:\\Windows\\SysWOW64\\omadmapis.exe"	119c4db5124980e166a863654dfe9fbd_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	119c4db5124980e166a863654dfe9fbd_JaffaCakes118.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	omadmapis.exe

Checks BIOS information in registry 2 TTPs 1 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	119c4db5124980e166a863654dfe9fbd_JaffaCakes118.exe

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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	omadmapis.exe

Executes dropped EXE 1 IoCs

pid	Process
3548	omadmapis.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	119c4db5124980e166a863654dfe9fbd_JaffaCakes118.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\omadmapis.exe	119c4db5124980e166a863654dfe9fbd_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\omadmapis.exe	119c4db5124980e166a863654dfe9fbd_JaffaCakes118.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4884-0-0x0000000000400000-0x00000000004BC000-memory.dmp	upx
behavioral2/memory/4884-1-0x0000000000400000-0x00000000004BC000-memory.dmp	upx
behavioral2/memory/4884-7-0x0000000000400000-0x00000000004BC000-memory.dmp	upx

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 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	119c4db5124980e166a863654dfe9fbd_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	omadmapis.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ipconfig.exe

Gathers network information 2 TTPs 1 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command and Scripting Interpreter

T1059

pid	Process
1208	ipconfig.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4884	119c4db5124980e166a863654dfe9fbd_JaffaCakes118.exe
4884	119c4db5124980e166a863654dfe9fbd_JaffaCakes118.exe
4884	119c4db5124980e166a863654dfe9fbd_JaffaCakes118.exe
4884	119c4db5124980e166a863654dfe9fbd_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4884	119c4db5124980e166a863654dfe9fbd_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3548	omadmapis.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4884 wrote to memory of 3548	4884	119c4db5124980e166a863654dfe9fbd_JaffaCakes118.exe	81
PID 4884 wrote to memory of 3548	4884	119c4db5124980e166a863654dfe9fbd_JaffaCakes118.exe	81
PID 4884 wrote to memory of 3548	4884	119c4db5124980e166a863654dfe9fbd_JaffaCakes118.exe	81
PID 4884 wrote to memory of 1512	4884	119c4db5124980e166a863654dfe9fbd_JaffaCakes118.exe	83
PID 4884 wrote to memory of 1512	4884	119c4db5124980e166a863654dfe9fbd_JaffaCakes118.exe	83
PID 4884 wrote to memory of 1512	4884	119c4db5124980e166a863654dfe9fbd_JaffaCakes118.exe	83
PID 3548 wrote to memory of 1208	3548	omadmapis.exe	85
PID 3548 wrote to memory of 1208	3548	omadmapis.exe	85
PID 3548 wrote to memory of 1208	3548	omadmapis.exe	85

C:\Users\Admin\AppData\Local\Temp\119c4db5124980e166a863654dfe9fbd_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\119c4db5124980e166a863654dfe9fbd_JaffaCakes118.exe"
1⤵
- Adds policy Run key to start application
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4884
- C:\Windows\SysWOW64\omadmapis.exe
  C:\Windows\SysWOW64\omadmapis.exe
  2⤵
  - Drops file in Drivers directory
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3548
- - C:\Windows\SysWOW64\ipconfig.exe
    "C:\Windows\system32\ipconfig.exe" /flushdns
    3⤵
    - System Location Discovery: System Language Discovery
    - Gathers network information
    PID:1208
- C:\Windows\SysWOW64\cmd.exe
  /c C:\Users\Admin\AppData\Local\Temp\~unins5750.bat "C:\Users\Admin\AppData\Local\Temp\119c4db5124980e166a863654dfe9fbd_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1512

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

5

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

~unins5750.bat

Path C:\Users\Admin\AppData\Local\Temp\~unins5750.bat
Size 49B
SHA256 97ac9fee75a1f7b63b3115e9c4fb9dda80b1caba26d2fb51325670dee261fe32
MD5 9e0a2f5ab30517809b95a1ff1dd98c53
SHA1 5c1eefdf10e67d1e9216e2e3f5e92352d583c9ce
SHA512 e959cc1fd48fb1cccf135a697924c775a3812bab211fc7f9b00c5a9d617261d84c5d6f7cb548774c1e8f46811b06ca39c5603d0e10cbcb7b805f9abbe49b9b42
MD5 SHA1 SHA512

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Adminxplore.exe

Path C:\Users\Adminxplore.exe
Size 2KB
SHA256 18cf01cdfe2084e965e0358192de6b8fb2abdeee6ec47f00e772642e97bc5326
MD5 a48249517f2f7a1b7e87e31b58d676d2
SHA1 e7e21a080b40af4df354e6dd2f5451b06870caf0
SHA512 fc4933d4a84671877e5c61a4b5232e6e1bb9faecb0e45bfb145f9d73be81b9047cf79ebaaaa74b95439b9559688f16f487ff1dc4cc4ba9711f3aea8357d30c73
MD5 SHA1 SHA512

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omadmapis.exe

Path C:\Windows\SysWOW64\omadmapis.exe
Size 124KB
SHA256 5c3c5a1ba24a0b07e1436ef1aba88de471981b49e60f3a70abc20c7d539e6c2c
MD5 66eb11e632d0a530b971ad92cf6dbb6c
SHA1 45f62dcb8bb6f4ddd5e4500708759781dd04c53f
SHA512 befc44214d39771f708b30f0247bfcc0b73109b6db8d84630e0b352b7fbe488f5860912ffdc3e0337025608f3b96f72852b7925d5b2bf6a39db2bdb97fe12514
SSDEEP 3072:R16h91hk1ge1SJfalecFVtR578Em+ylLw:na91q1r1SdalecDtrL
MD5 SHA1 SHA512 SSDEEP

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memory/4884-0-0x0000000000400000-0x00000000004BC000-memory.dmp

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memory/4884-1-0x0000000000400000-0x00000000004BC000-memory.dmp

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memory/4884-2-0x000000000040E000-0x00000000004B4000-memory.dmp

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memory/4884-3-0x0000000000980000-0x0000000000A1B000-memory.dmp

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memory/4884-7-0x0000000000400000-0x00000000004BC000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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