ab62a346d592c203ab254bda5eb638eeac6f408d9c84999b9235d86a104e7b50

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
03/07/2024, 17:12

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General

Target

23288e665a585ed8411b9a245626cc28_JaffaCakes118.exe
Size

55KB
MD5

23288e665a585ed8411b9a245626cc28
SHA1

43e63c389a10fb983a67859932fbfa39f996ee16
SHA256

ab62a346d592c203ab254bda5eb638eeac6f408d9c84999b9235d86a104e7b50
SHA512

d0ff3f0323b9543584bbffcd8e1146c458f952ab8ae9d04b918c6dfed4dce9551d72e51e105a67015a3e2a2874707796cc9eeb7d62ca361fa64d66b7e6b4031d
SSDEEP

1536:4sWKB76OG6h9o5rKnMxENFQdQsJMcRAz12kDb/:4ibaeMxENPc01Tf/

Score

7^/10

persistence upx

Malware Config

Signatures

Loads dropped DLL 2 IoCs

pid	Process
2128	23288e665a585ed8411b9a245626cc28_JaffaCakes118.exe
1340	rundll32.exe

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2128-3-0x0000000000400000-0x0000000000410C8C-memory.dmp	upx
behavioral2/memory/2128-2-0x0000000000400000-0x0000000000410C8C-memory.dmp	upx
behavioral2/memory/2128-5-0x0000000000400000-0x0000000000410C8C-memory.dmp	upx
behavioral2/memory/2128-12-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/2128-11-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/2128-13-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/2128-19-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/1340-29-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/1340-32-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/1340-34-0x0000000010000000-0x0000000010014000-memory.dmp	upx

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\\nnnllMgf.dll,#1"	rundll32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\mlJAqnKd.dll	23288e665a585ed8411b9a245626cc28_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\mlJAqnKd.dll	23288e665a585ed8411b9a245626cc28_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\nnnllMgf.dll	23288e665a585ed8411b9a245626cc28_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\nnnllMgf.dll	23288e665a585ed8411b9a245626cc28_JaffaCakes118.exe

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{493F974E-FEAE-459E-B770-D9262474EB97}	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{493F974E-FEAE-459E-B770-D9262474EB97}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{493F974E-FEAE-459E-B770-D9262474EB97}\InprocServer32\ = "C:\\Windows\\SysWow64\\nnnllMgf.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{493F974E-FEAE-459E-B770-D9262474EB97}\InprocServer32\ThreadingModel = "Both"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2128	23288e665a585ed8411b9a245626cc28_JaffaCakes118.exe
2128	23288e665a585ed8411b9a245626cc28_JaffaCakes118.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe
1340	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2128	23288e665a585ed8411b9a245626cc28_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2128	23288e665a585ed8411b9a245626cc28_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2128 wrote to memory of 616	2128	23288e665a585ed8411b9a245626cc28_JaffaCakes118.exe	5
PID 2128 wrote to memory of 1340	2128	23288e665a585ed8411b9a245626cc28_JaffaCakes118.exe	94
PID 2128 wrote to memory of 1340	2128	23288e665a585ed8411b9a245626cc28_JaffaCakes118.exe	94
PID 2128 wrote to memory of 1340	2128	23288e665a585ed8411b9a245626cc28_JaffaCakes118.exe	94
PID 2128 wrote to memory of 2116	2128	23288e665a585ed8411b9a245626cc28_JaffaCakes118.exe	95
PID 2128 wrote to memory of 2116	2128	23288e665a585ed8411b9a245626cc28_JaffaCakes118.exe	95
PID 2128 wrote to memory of 2116	2128	23288e665a585ed8411b9a245626cc28_JaffaCakes118.exe	95

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:616

C:\Users\Admin\AppData\Local\Temp\23288e665a585ed8411b9a245626cc28_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\23288e665a585ed8411b9a245626cc28_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2128
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Windows\system32\nnnllMgf.dll,a
  2⤵
  - Loads dropped DLL
  - Adds Run key to start application
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  PID:1340
- 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\23288e665a585ed8411b9a245626cc28_JaffaCakes118.exe"
  2⤵
  PID:2116

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

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\mlJAqnKd.dll

Filesize
34KB

MD5
5184deee82188e7cef373903609920e9

SHA1
129b65cc7e422425f87650c7437ce4cd64da112c

SHA256
b4d7a166d565a1230a1d426718324246cb15027e7a8f865a3e9d3b48bf83d4df

SHA512
56d55ba58f6965afdf38a3b1ea48ccb64488b375b7248bd88a5b6e9bbcb199f8867c87397461488067f591baafdcfaa7901034db64adea72c57a3f352daeb200

Download Submit
memory/1340-29-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/1340-30-0x0000000000EA0000-0x0000000000EA7000-memory.dmp

Filesize
28KB

Download
memory/1340-34-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/1340-31-0x000000001000E000-0x0000000010013000-memory.dmp

Filesize
20KB

Download
memory/1340-32-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/2128-13-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/2128-2-0x0000000000400000-0x0000000000410C8C-memory.dmp

Filesize
67KB

Download
memory/2128-1-0x0000000000780000-0x000000000078C000-memory.dmp

Filesize
48KB

Download
memory/2128-19-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/2128-11-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/2128-0-0x0000000000400000-0x0000000000410C8C-memory.dmp

Filesize
67KB

Download
memory/2128-12-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/2128-4-0x0000000000407000-0x0000000000410000-memory.dmp

Filesize
36KB

Download
memory/2128-3-0x0000000000400000-0x0000000000410C8C-memory.dmp

Filesize
67KB

Download
memory/2128-5-0x0000000000400000-0x0000000000410C8C-memory.dmp

Filesize
67KB

Download