1a36dd6c5b9bc4683505111d4af7ddd9c7f2df4cd0edb26c9f23aaa1c4b18f37

Analysis

max time kernel
95s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
18/07/2024, 03:09

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General

Target
55eb3ca2c57d5263d173e4f5bb4b4a9f_JaffaCakes118.exe
Size 114KB
Sample240718-dnt4dssfjn
SHA256 1a36dd6c5b9bc4683505111d4af7ddd9c7f2df4cd0edb26c9f23aaa1c4b18f37
MD5 55eb3ca2c57d5263d173e4f5bb4b4a9f
SHA1 0b1873925a1be3270e064ac160b365c85f142989
SHA512 fcb9531094d41569ff2e0758891ce913b11eec10be7f9637fafc06e9e44b1b12ea7c0c3daffcf4becc148733a99d34987a9642c7431e064a3f08403ff5085e60
SSDEEP 3072:92x9x5yW/vGqfZzpcLDjwBhNbkDBFtxi29Iv:AxxDvGqhzpcLnwBhNQvtx
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

defense_evasion discovery exploit

Malware Config

Signatures

Possible privilege escalation attempt 2 IoCs

exploit

pid	Process
1552	takeown.exe
4192	icacls.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-1-5-21-2636447293-1148739154-93880854-1000\Control Panel\International\Geo\Nation	55eb3ca2c57d5263d173e4f5bb4b4a9f_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
3896	regsvr32.exe

Loads dropped DLL 1 IoCs

pid	Process
3896	regsvr32.exe

Modifies file permissions 1 TTPs 2 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1552	takeown.exe
4192	icacls.exe

File and Directory Permissions Modification: Windows File and Directory Permissions Modification 1 TTPs
defense_evasion

Windows File and Directory Permissions Modification
T1222.001

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rpcss.dll	regsvr32.exe
File opened for modification	C:\Windows\SysWOW64\rpcss.dll	regsvr32.exe
File opened for modification	C:\Windows\SysWOW64\apa.dll	regsvr32.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3896	regsvr32.exe
3896	regsvr32.exe
3896	regsvr32.exe
3896	regsvr32.exe
3896	regsvr32.exe
3896	regsvr32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3896	regsvr32.exe
Token: SeTakeOwnershipPrivilege	1552	takeown.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1856 wrote to memory of 3896	1856	55eb3ca2c57d5263d173e4f5bb4b4a9f_JaffaCakes118.exe	84
PID 1856 wrote to memory of 3896	1856	55eb3ca2c57d5263d173e4f5bb4b4a9f_JaffaCakes118.exe	84
PID 1856 wrote to memory of 3896	1856	55eb3ca2c57d5263d173e4f5bb4b4a9f_JaffaCakes118.exe	84
PID 3896 wrote to memory of 1552	3896	regsvr32.exe	86
PID 3896 wrote to memory of 1552	3896	regsvr32.exe	86
PID 3896 wrote to memory of 1552	3896	regsvr32.exe	86
PID 3896 wrote to memory of 4192	3896	regsvr32.exe	89
PID 3896 wrote to memory of 4192	3896	regsvr32.exe	89
PID 3896 wrote to memory of 4192	3896	regsvr32.exe	89
PID 3896 wrote to memory of 788	3896	regsvr32.exe	10

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k DcomLaunch -p
1⤵
PID:788

C:\Users\Admin\AppData\Local\Temp\55eb3ca2c57d5263d173e4f5bb4b4a9f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\55eb3ca2c57d5263d173e4f5bb4b4a9f_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1856
- C:\Windows\SysWOW64\regsvr32.exe
  "C:\Windows\system32\regsvr32.exe" /s C:\Users\Admin\AppData\Local\Temp\~~e5778ca.tmp ,C:\Users\Admin\AppData\Local\Temp\55eb3ca2c57d5263d173e4f5bb4b4a9f_JaffaCakes118.exe
  2⤵
  - Deletes itself
  - Loads dropped DLL
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3896
- - C:\Windows\SysWOW64\takeown.exe
    takeown /f "C:\Windows\system32\rpcss.dll"
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    - Suspicious use of AdjustPrivilegeToken
    PID:1552
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Windows\system32\rpcss.dll" /grant administrators:F
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:4192

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File and Directory Permissions Modification

T1222

Windows File and Directory Permissions Modification

T1222.001

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

~~e5778ca.tmp

Path C:\Users\Admin\AppData\Local\Temp\~~e5778ca.tmp
Size 1.0MB
SHA256 bf19c41244b139e4d784bbf88af4c5ebed32b73300342440c8020c62a737b1ab
MD5 a3b839656a325413e4d050b8deb3fc0c
SHA1 6db150f24820cef0fd78cab23cfc7066cb9d121e
SHA512 6b7c33c65c9490239ede87c762204b47ea84667be78c75bc13026dac96f482a0ce2723d5b0887c0579e2ecdeb93c3e82239bc8d1d8b35368ca22c5d30b5eebd4
SSDEEP 3072:5jiyYKFDuAt3v6z+sor6Qda0AJVpRb41xno:J5YqDWz786Qda0AJVpZ41S
MD5 SHA1 SHA512 SSDEEP

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