671c919aba28ea43330996a4c8a09ee18125b3ca5521ac3350bdabeda3cb3309

Analysis

max time kernel
140s
max time network
126s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
21/10/2024, 12:33

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General

Target
66b9a1878811425b14e34e5789a6a3e2_JaffaCakes118.exe
Size 12KB
Sample241021-prmdhateqc
SHA256 671c919aba28ea43330996a4c8a09ee18125b3ca5521ac3350bdabeda3cb3309
MD5 66b9a1878811425b14e34e5789a6a3e2
SHA1 67d0d1e9eef5c5734d6e819af387cd3f1a6955a7
SHA512 74320751b254c30214f2862e69ed6111c10f52e6ae1ae9b094bed7e6110f11965838d2a4c38d09dd969418dd55c07d56566eb10671b8f94ff2867a6b88ff2605
SSDEEP 192:yDCR2wVeH598OIBn6RCf6sRVM7pa4rx2W7g4nLeZ7sasHu8BFC8:YC0wy98NBI2Cpa4rUWM4LE7wM8
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

discovery spyware stealer upx

Malware Config

Signatures

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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	66b9a1878811425b14e34e5789a6a3e2_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
4340	E0a0i9.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\aksuser.dll	E0a0i9.exe
File opened for modification	C:\Windows\SysWOW64\aksuser.dll	E0a0i9.exe
File created	C:\Windows\SysWOW64\system11.exe	E0a0i9.exe
File opened for modification	C:\Windows\SysWOW64\system11.exe	E0a0i9.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4400-0-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000c000000023b5f-5.dat	upx
behavioral2/memory/4400-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4340-15-0x0000000000400000-0x000000000040B000-memory.dmp	upx

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\ksuser.dll	E0a0i9.exe

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 2 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	66b9a1878811425b14e34e5789a6a3e2_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	E0a0i9.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4340	E0a0i9.exe
4340	E0a0i9.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4400 wrote to memory of 4340	4400	66b9a1878811425b14e34e5789a6a3e2_JaffaCakes118.exe	84
PID 4400 wrote to memory of 4340	4400	66b9a1878811425b14e34e5789a6a3e2_JaffaCakes118.exe	84
PID 4400 wrote to memory of 4340	4400	66b9a1878811425b14e34e5789a6a3e2_JaffaCakes118.exe	84

C:\Users\Admin\AppData\Local\Temp\66b9a1878811425b14e34e5789a6a3e2_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\66b9a1878811425b14e34e5789a6a3e2_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4400
- C:\Users\Admin\AppData\Local\Temp\E0a0i9.exe
  "C:\Users\Admin\AppData\Local\Temp\E0a0i9.exe" -Parameter
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:4340

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

E0a0i9.exe

Path C:\Users\Admin\AppData\Local\Temp\E0a0i9.exe
Size 12KB
SHA256 671c919aba28ea43330996a4c8a09ee18125b3ca5521ac3350bdabeda3cb3309
MD5 66b9a1878811425b14e34e5789a6a3e2
SHA1 67d0d1e9eef5c5734d6e819af387cd3f1a6955a7
SHA512 74320751b254c30214f2862e69ed6111c10f52e6ae1ae9b094bed7e6110f11965838d2a4c38d09dd969418dd55c07d56566eb10671b8f94ff2867a6b88ff2605
SSDEEP 192:yDCR2wVeH598OIBn6RCf6sRVM7pa4rx2W7g4nLeZ7sasHu8BFC8:YC0wy98NBI2Cpa4rUWM4LE7wM8
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/4340-15-0x0000000000400000-0x000000000040B000-memory.dmp

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memory/4400-0-0x0000000000400000-0x000000000040B000-memory.dmp

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memory/4400-13-0x0000000000400000-0x000000000040B000-memory.dmp

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