bd6c17bdf6d9418fc5728a7497e68370440c09621b09917b1d78c65deddc6c5e

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
01-10-2024 02:45

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

04171a66c2118b99264cfb1694a83922_JaffaCakes118.dll
Size

231KB
MD5

04171a66c2118b99264cfb1694a83922
SHA1

3b862bff6c96a84f1dd02145a55cf4a390e1112e
SHA256

bd6c17bdf6d9418fc5728a7497e68370440c09621b09917b1d78c65deddc6c5e
SHA512

5899e30ddcfb4c03958f4d27522a9c2cb95b1ee8b4e5c8ad34aafdd91788d7382cd18bad4979d9507b4ef2578d2970ce5e60e27e63262dd70d251905680a6a5d
SSDEEP

3072:zysX0WxnWd/IkmL+PViEbmzwtz/wk8YWbO:mskd/IkmuVfyWdMO

Score

10^/10

discovery persistence

Malware Config

Signatures

Adds autorun key to be loaded by Explorer.exe on startup 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\puwbn = "{b44bf619-3cc3-8118-4dd4-3cc37e9199d8}"	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
2600	rundll32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\chjoa.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\chjoa.dll	rundll32.exe
File created	C:\Windows\SysWOW64\kprwi.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\kprwi.dll	rundll32.exe

System Location Discovery: System Language Discovery 1 TTPs 1 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	rundll32.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{b44bf619-3cc3-8118-4dd4-3cc37e9199d8}	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{b44bf619-3cc3-8118-4dd4-3cc37e9199d8}\	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{b44bf619-3cc3-8118-4dd4-3cc37e9199d8}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{b44bf619-3cc3-8118-4dd4-3cc37e9199d8}\InprocServer32\ = "C:\\Windows\\SysWow64\\kprwi.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{b44bf619-3cc3-8118-4dd4-3cc37e9199d8}\InprocServer32\ThreadingModel = "Apartment"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2600	rundll32.exe
2600	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2600	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2600	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2204 wrote to memory of 2600	2204	rundll32.exe	30
PID 2204 wrote to memory of 2600	2204	rundll32.exe	30
PID 2204 wrote to memory of 2600	2204	rundll32.exe	30
PID 2204 wrote to memory of 2600	2204	rundll32.exe	30
PID 2204 wrote to memory of 2600	2204	rundll32.exe	30
PID 2204 wrote to memory of 2600	2204	rundll32.exe	30
PID 2204 wrote to memory of 2600	2204	rundll32.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\04171a66c2118b99264cfb1694a83922_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2204
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\04171a66c2118b99264cfb1694a83922_JaffaCakes118.dll,#1
  2⤵
  - Adds autorun key to be loaded by Explorer.exe on startup
  - Loads dropped DLL
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2600

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

\Windows\SysWOW64\chjoa.dll

Filesize
625KB

MD5
95e2376b3323f062eb562b8586d0f14a

SHA1
453d4c3bf4a489433b593420a37bbffb7749875a

SHA256
bd3fa8750123d00aa0967fba44372c46ea002681da9c9b77a4f9261553e26017

SHA512
b898603d07a49237e4dfc6872d5caa7616bae1258926f10e66c4d3f0d81cccefac1e844395b65bb1f308fbc022061b52e51f60658d0a546c04b365b3428cc87d

Download Submit
memory/2600-1-0x0000000000401000-0x0000000000408000-memory.dmp

Filesize
28KB

Download
memory/2600-6-0x0000000000400000-0x0000000000443000-memory.dmp

Filesize
268KB

Download
memory/2600-7-0x0000000000400000-0x0000000000443000-memory.dmp

Filesize
268KB

Download
memory/2600-10-0x0000000000400000-0x0000000000443000-memory.dmp

Filesize
268KB

Download