9920fd4fbfeed87a1cf1eeed1794cbe147999bb2720a0957276ae3452490c8aa

General

Target

a43aaf16b8ed1cb8cc556852d8365975_JaffaCakes118.exe
Size

76KB
MD5

a43aaf16b8ed1cb8cc556852d8365975
SHA1

cb777d56cb774fa5e3a1f6af0e99bfc3c40e8190
SHA256

9920fd4fbfeed87a1cf1eeed1794cbe147999bb2720a0957276ae3452490c8aa
SHA512

e1a277d7e56c963529a25dbecf8bde8e5d34a2343bc78d842bccbd221eea6cb76767b086c736653a20b3bbdbe9bc7b6a13a9a89ca228dd47e5e2e39c3dea287a
SSDEEP

1536:iibNxmlI7lBZUNlqkj12oLc/bxqnoYxiFou98Z54QaNUqePj:xpxqAaNYkj12acjwoLd9o54DNUqE

Score

10^/10

discovery evasion persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = ",C:\\Windows\\SysWOW64\\rxjddnvj.exe,"	rxjddnvj.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = ",C:\\Windows\\SysWOW64\\rxjddnvj.exe,"	rxjddnvj.exe

Disables Task Manager via registry modification
evasion

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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	a43aaf16b8ed1cb8cc556852d8365975_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
3620	rxjddnvj.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\rxjddnvj.exe	rxjddnvj.exe
File opened for modification	C:\Windows\SysWOW64\winfrun32.bin	a43aaf16b8ed1cb8cc556852d8365975_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\rxjddnvj.exe	a43aaf16b8ed1cb8cc556852d8365975_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\rxjddnvj.exe	a43aaf16b8ed1cb8cc556852d8365975_JaffaCakes118.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	a43aaf16b8ed1cb8cc556852d8365975_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rxjddnvj.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
964	a43aaf16b8ed1cb8cc556852d8365975_JaffaCakes118.exe
964	a43aaf16b8ed1cb8cc556852d8365975_JaffaCakes118.exe
964	a43aaf16b8ed1cb8cc556852d8365975_JaffaCakes118.exe
3620	rxjddnvj.exe
3620	rxjddnvj.exe
3620	rxjddnvj.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 964 wrote to memory of 3620	964	a43aaf16b8ed1cb8cc556852d8365975_JaffaCakes118.exe	85
PID 964 wrote to memory of 3620	964	a43aaf16b8ed1cb8cc556852d8365975_JaffaCakes118.exe	85
PID 964 wrote to memory of 3620	964	a43aaf16b8ed1cb8cc556852d8365975_JaffaCakes118.exe	85

System policy modification 1 TTPs 2 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System	rxjddnvj.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableTaskMgr = "1"	rxjddnvj.exe

C:\Users\Admin\AppData\Local\Temp\a43aaf16b8ed1cb8cc556852d8365975_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a43aaf16b8ed1cb8cc556852d8365975_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:964
- C:\Windows\SysWOW64\rxjddnvj.exe
  "C:\Windows\system32\rxjddnvj.exe" start
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - System policy modification
  PID:3620

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\rxjddnvj.exe

Filesize
76KB

MD5
a43aaf16b8ed1cb8cc556852d8365975

SHA1
cb777d56cb774fa5e3a1f6af0e99bfc3c40e8190

SHA256
9920fd4fbfeed87a1cf1eeed1794cbe147999bb2720a0957276ae3452490c8aa

SHA512
e1a277d7e56c963529a25dbecf8bde8e5d34a2343bc78d842bccbd221eea6cb76767b086c736653a20b3bbdbe9bc7b6a13a9a89ca228dd47e5e2e39c3dea287a

Download Submit
memory/964-25-0x0000000000790000-0x0000000000792000-memory.dmp

Filesize
8KB

Download
memory/964-1-0x0000000000790000-0x0000000000792000-memory.dmp

Filesize
8KB

Download
memory/964-0-0x0000000000400000-0x0000000000626139-memory.dmp

Filesize
2.1MB

Download
memory/964-24-0x0000000000400000-0x0000000000626139-memory.dmp

Filesize
2.1MB

Download
memory/3620-34-0x0000000000400000-0x0000000000626139-memory.dmp

Filesize
2.1MB

Download
memory/3620-38-0x0000000000400000-0x0000000000626139-memory.dmp

Filesize
2.1MB

Download
memory/3620-28-0x0000000000400000-0x0000000000626139-memory.dmp

Filesize
2.1MB

Download
memory/3620-30-0x0000000000400000-0x0000000000626139-memory.dmp

Filesize
2.1MB

Download
memory/3620-32-0x0000000000400000-0x0000000000626139-memory.dmp

Filesize
2.1MB

Download
memory/3620-13-0x0000000000850000-0x0000000000852000-memory.dmp

Filesize
8KB

Download
memory/3620-36-0x0000000000400000-0x0000000000626139-memory.dmp

Filesize
2.1MB

Download
memory/3620-26-0x0000000000400000-0x0000000000626139-memory.dmp

Filesize
2.1MB

Download
memory/3620-40-0x0000000000400000-0x0000000000626139-memory.dmp

Filesize
2.1MB

Download
memory/3620-42-0x0000000000400000-0x0000000000626139-memory.dmp

Filesize
2.1MB

Download
memory/3620-44-0x0000000000400000-0x0000000000626139-memory.dmp

Filesize
2.1MB

Download
memory/3620-46-0x0000000000400000-0x0000000000626139-memory.dmp

Filesize
2.1MB

Download
memory/3620-48-0x0000000000400000-0x0000000000626139-memory.dmp

Filesize
2.1MB

Download
memory/3620-50-0x0000000000400000-0x0000000000626139-memory.dmp

Filesize
2.1MB

Download
memory/3620-52-0x0000000000400000-0x0000000000626139-memory.dmp

Filesize
2.1MB

Download
memory/3620-54-0x0000000000400000-0x0000000000626139-memory.dmp

Filesize
2.1MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads