cb6ffd40086f791f484e4e35e2a3fbf0fdf112cd6f9f749478e831ac8e8e1106

General

Target

ac05f3e3c0774eac69ed06a6d2cbb543_JaffaCakes118.dll
Size

436KB
MD5

ac05f3e3c0774eac69ed06a6d2cbb543
SHA1

48f8b34ec60a0469c03f4ced8250720cde961383
SHA256

cb6ffd40086f791f484e4e35e2a3fbf0fdf112cd6f9f749478e831ac8e8e1106
SHA512

0c20771add113db39b4b753e7cfd6458cbf0dd7b81cfb0f73a9a0d471acd9dd6c76668c0b8a478c273798466869f8ca4ef0154e6f29f2df969540ee69f7682f3
SSDEEP

12288:6Kc3Y0IDPO3RZIqOVCUlcOQ+tuYw7dmvxdtLMkOa:zcI0I2ZIqzcu+vw7QxLv

Score

8^/10

Malware Config

Signatures

Blocklisted process makes network request 6 IoCs

flow	pid	Process
6	2872	rundll32.exe
9	2872	rundll32.exe
12	2872	rundll32.exe
13	2872	rundll32.exe
15	2872	rundll32.exe
16	2872	rundll32.exe

Deletes itself 1 IoCs

pid	Process
2804	cmd.exe

Identifies Wine through registry keys 2 TTPs 2 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2257386474-3982792636-3902186748-1000\Software\Wine	rundll32.exe
Key opened	\REGISTRY\USER\S-1-5-21-2257386474-3982792636-3902186748-1000\Software\Wine	rundll32.exe

Loads dropped DLL 4 IoCs

pid	Process
2872	rundll32.exe
2872	rundll32.exe
2872	rundll32.exe
2872	rundll32.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\WinDLL (uthn.exe) = "rundll32.exe C:\\Windows\\system32\\uthn.exe,start"	rundll32.exe

Drops file in System32 directory 2 IoCs

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

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2544	rundll32.exe
2872	rundll32.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 3 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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2544	rundll32.exe
2872	rundll32.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1400 wrote to memory of 2544	1400	rundll32.exe	29
PID 1400 wrote to memory of 2544	1400	rundll32.exe	29
PID 1400 wrote to memory of 2544	1400	rundll32.exe	29
PID 1400 wrote to memory of 2544	1400	rundll32.exe	29
PID 1400 wrote to memory of 2544	1400	rundll32.exe	29
PID 1400 wrote to memory of 2544	1400	rundll32.exe	29
PID 1400 wrote to memory of 2544	1400	rundll32.exe	29
PID 2544 wrote to memory of 2872	2544	rundll32.exe	30
PID 2544 wrote to memory of 2872	2544	rundll32.exe	30
PID 2544 wrote to memory of 2872	2544	rundll32.exe	30
PID 2544 wrote to memory of 2872	2544	rundll32.exe	30
PID 2544 wrote to memory of 2872	2544	rundll32.exe	30
PID 2544 wrote to memory of 2872	2544	rundll32.exe	30
PID 2544 wrote to memory of 2872	2544	rundll32.exe	30
PID 2544 wrote to memory of 2804	2544	rundll32.exe	31
PID 2544 wrote to memory of 2804	2544	rundll32.exe	31
PID 2544 wrote to memory of 2804	2544	rundll32.exe	31
PID 2544 wrote to memory of 2804	2544	rundll32.exe	31
PID 2544 wrote to memory of 2804	2544	rundll32.exe	31
PID 2544 wrote to memory of 2804	2544	rundll32.exe	31
PID 2544 wrote to memory of 2804	2544	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ac05f3e3c0774eac69ed06a6d2cbb543_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1400
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\ac05f3e3c0774eac69ed06a6d2cbb543_JaffaCakes118.dll,#1
  2⤵
  - Identifies Wine through registry keys
  - Adds Run key to start application
  - Drops file in System32 directory
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2544
- - C:\Windows\SysWOW64\rundll32.exe
    "C:\Windows\System32\rundll32.exe" C:\Windows\system32\uthn.exe,start
    3⤵
    - Blocklisted process makes network request
    - Identifies Wine through registry keys
    - Loads dropped DLL
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:2872
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\uninstall.bat" "
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2804

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Virtualization/Sandbox Evasion

1

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\uninstall.bat

Filesize
266B

MD5
f0b3750267e29ff676a8cb03e6f76a7f

SHA1
4b43415c9dbd0fa26b2b97fc0cc6fd9efca3d4fa

SHA256
89f13c4cfffa54f260efd7ba7ab7110dcadef405b80038b107965b360aa1ebf1

SHA512
5ba5add9a1dd979d868c4a716c7590a8c02ca1fa656447c0e4caf79214ed83d594d2b1bec23dd71ba0a2ecc1dc4a0a78757bca51383475240d9b29b328432a7b

Download Submit
C:\Windows\SysWOW64\uthn.exe

Filesize
436KB

MD5
ac05f3e3c0774eac69ed06a6d2cbb543

SHA1
48f8b34ec60a0469c03f4ced8250720cde961383

SHA256
cb6ffd40086f791f484e4e35e2a3fbf0fdf112cd6f9f749478e831ac8e8e1106

SHA512
0c20771add113db39b4b753e7cfd6458cbf0dd7b81cfb0f73a9a0d471acd9dd6c76668c0b8a478c273798466869f8ca4ef0154e6f29f2df969540ee69f7682f3

Download Submit
memory/2544-23-0x0000000010000000-0x0000000010121000-memory.dmp

Filesize
1.1MB

Download
memory/2544-1-0x0000000010000000-0x0000000010121000-memory.dmp

Filesize
1.1MB

Download
memory/2544-2-0x0000000010000000-0x0000000010121000-memory.dmp

Filesize
1.1MB

Download
memory/2544-3-0x0000000010000000-0x0000000010121000-memory.dmp

Filesize
1.1MB

Download
memory/2544-4-0x0000000010001000-0x0000000010007000-memory.dmp

Filesize
24KB

Download
memory/2544-7-0x0000000010000000-0x0000000010121000-memory.dmp

Filesize
1.1MB

Download
memory/2544-16-0x0000000000470000-0x000000000047E000-memory.dmp

Filesize
56KB

Download
memory/2544-0-0x0000000010000000-0x0000000010121000-memory.dmp

Filesize
1.1MB

Download
memory/2872-29-0x0000000010000000-0x0000000010121000-memory.dmp

Filesize
1.1MB

Download
memory/2872-37-0x0000000010000000-0x0000000010121000-memory.dmp

Filesize
1.1MB

Download
memory/2872-27-0x0000000010000000-0x0000000010121000-memory.dmp

Filesize
1.1MB

Download
memory/2872-28-0x0000000010000000-0x0000000010121000-memory.dmp

Filesize
1.1MB

Download
memory/2872-24-0x0000000010000000-0x0000000010121000-memory.dmp

Filesize
1.1MB

Download
memory/2872-30-0x0000000000470000-0x000000000047E000-memory.dmp

Filesize
56KB

Download
memory/2872-31-0x0000000010000000-0x0000000010121000-memory.dmp

Filesize
1.1MB

Download
memory/2872-33-0x0000000010000000-0x0000000010121000-memory.dmp

Filesize
1.1MB

Download
memory/2872-35-0x0000000010000000-0x0000000010121000-memory.dmp

Filesize
1.1MB

Download
memory/2872-26-0x0000000010000000-0x0000000010121000-memory.dmp

Filesize
1.1MB

Download
memory/2872-39-0x0000000010000000-0x0000000010121000-memory.dmp

Filesize
1.1MB

Download
memory/2872-41-0x0000000010000000-0x0000000010121000-memory.dmp

Filesize
1.1MB

Download
memory/2872-43-0x0000000010000000-0x0000000010121000-memory.dmp

Filesize
1.1MB

Download
memory/2872-45-0x0000000010000000-0x0000000010121000-memory.dmp

Filesize
1.1MB

Download
memory/2872-47-0x0000000010000000-0x0000000010121000-memory.dmp

Filesize
1.1MB

Download
memory/2872-49-0x0000000010000000-0x0000000010121000-memory.dmp

Filesize
1.1MB

Download
memory/2872-51-0x0000000010000000-0x0000000010121000-memory.dmp

Filesize
1.1MB

Download
memory/2872-53-0x0000000010000000-0x0000000010121000-memory.dmp

Filesize
1.1MB

Download
memory/2872-55-0x0000000010000000-0x0000000010121000-memory.dmp

Filesize
1.1MB

Download
memory/2872-57-0x0000000010000000-0x0000000010121000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads