2e01b65e690647a35d4c3abe30ce420c7e3f8468e17dfda7ae9778a453147f2e

General

Target

3b852fb7387e25baa511522aa2a5967c_JaffaCakes118.exe
Size

57KB
MD5

3b852fb7387e25baa511522aa2a5967c
SHA1

5a9eb0e2c1abb8066136397c2c858146d43a238a
SHA256

2e01b65e690647a35d4c3abe30ce420c7e3f8468e17dfda7ae9778a453147f2e
SHA512

b898d342b578bdb8b333a4ff842505167944d05eec8176c0e20f4e5dde5f7effea31097c0004e75ea3e34ab82567ee7ae16a74475e96f9da395b0e5c762babcb
SSDEEP

1536:qGCVm3GpXA5cHwtMF0CYu357Xah8BJLzMZ/N:BCVWtiwOF6O54DZ/N

Score

8^/10

persistence upx

Malware Config

Signatures

Boot or Logon Autostart Execution: Active Setup 2 TTPs 2 IoCs

Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

persistence

Active Setup

T1547.014

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{7880F99D-BC3G-14DF-89AS-1190DR808E85}	3b852fb7387e25baa511522aa2a5967c_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{7880F99D-BC3G-14DF-89AS-1190DR808E85}\StubPath = "C:\\Windows\\system32\\System64.exe"	3b852fb7387e25baa511522aa2a5967c_JaffaCakes118.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-1-5-21-47134698-4092160662-1261813102-1000\Control Panel\International\Geo\Nation	3b852fb7387e25baa511522aa2a5967c_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
3784	System64.exe

Loads dropped DLL 2 IoCs

pid	Process
3784	System64.exe
3784	System64.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3176-0-0x0000000000400000-0x0000000000423000-memory.dmp	upx
behavioral2/files/0x00090000000234a8-5.dat	upx
behavioral2/memory/3176-10-0x0000000000400000-0x0000000000423000-memory.dmp	upx
behavioral2/memory/4044-18-0x0000000000400000-0x0000000000423000-memory.dmp	upx
behavioral2/memory/4044-15-0x0000000000400000-0x0000000000423000-memory.dmp	upx
behavioral2/memory/4044-16-0x0000000000400000-0x0000000000423000-memory.dmp	upx
behavioral2/memory/3784-20-0x0000000000400000-0x0000000000423000-memory.dmp	upx

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\System64.exe	3b852fb7387e25baa511522aa2a5967c_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\System64.exe	3b852fb7387e25baa511522aa2a5967c_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3784 set thread context of 4044	3784	System64.exe	86

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4828	4044	WerFault.exe	86

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3784	System64.exe
3784	System64.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3176 wrote to memory of 3784	3176	3b852fb7387e25baa511522aa2a5967c_JaffaCakes118.exe	85
PID 3176 wrote to memory of 3784	3176	3b852fb7387e25baa511522aa2a5967c_JaffaCakes118.exe	85
PID 3176 wrote to memory of 3784	3176	3b852fb7387e25baa511522aa2a5967c_JaffaCakes118.exe	85
PID 3784 wrote to memory of 4044	3784	System64.exe	86
PID 3784 wrote to memory of 4044	3784	System64.exe	86
PID 3784 wrote to memory of 4044	3784	System64.exe	86
PID 3784 wrote to memory of 4044	3784	System64.exe	86
PID 3784 wrote to memory of 4044	3784	System64.exe	86
PID 3784 wrote to memory of 4044	3784	System64.exe	86
PID 3784 wrote to memory of 4044	3784	System64.exe	86
PID 3784 wrote to memory of 4044	3784	System64.exe	86

C:\Users\Admin\AppData\Local\Temp\3b852fb7387e25baa511522aa2a5967c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\3b852fb7387e25baa511522aa2a5967c_JaffaCakes118.exe"
1⤵
- Boot or Logon Autostart Execution: Active Setup
- Checks computer location settings
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:3176
- C:\Windows\SysWOW64\System64.exe
  "C:\Windows\system32\System64.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3784
- - C:\Windows\SysWOW64\userinit.exe
    "C:\Windows\system32\userinit.exe"
    3⤵
    PID:4044
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4044 -s 12
      4⤵
      Program crash
      PID:4828

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4044 -ip 4044
1⤵
PID:2008

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Active Setup

1

T1547.014

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Active Setup

1

T1547.014

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\System64.exe

Filesize
57KB

MD5
3b852fb7387e25baa511522aa2a5967c

SHA1
5a9eb0e2c1abb8066136397c2c858146d43a238a

SHA256
2e01b65e690647a35d4c3abe30ce420c7e3f8468e17dfda7ae9778a453147f2e

SHA512
b898d342b578bdb8b333a4ff842505167944d05eec8176c0e20f4e5dde5f7effea31097c0004e75ea3e34ab82567ee7ae16a74475e96f9da395b0e5c762babcb

Download Submit
memory/3176-0-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/3176-10-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/3784-13-0x0000000000920000-0x0000000000943000-memory.dmp

Filesize
140KB

Download
memory/3784-14-0x0000000000920000-0x0000000000943000-memory.dmp

Filesize
140KB

Download
memory/3784-20-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/4044-18-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/4044-15-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download
memory/4044-16-0x0000000000400000-0x0000000000423000-memory.dmp

Filesize
140KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads