3958f341474249b0fc1772c46bf4b2a8f6531bea26caceb44ec5c6c7aa1619cb

General

Target

0f98374016e2f3a77034ecf068624e89_JaffaCakes118.exe
Size

124KB
MD5

0f98374016e2f3a77034ecf068624e89
SHA1

6c363894525531dfd2135d648cbd18341c0e0c53
SHA256

3958f341474249b0fc1772c46bf4b2a8f6531bea26caceb44ec5c6c7aa1619cb
SHA512

2d6e5e928a23767203c86a01e9cc9bad99e430d57175a71b7743deccd2b665dfa5e88e7614825709b446b107edef74fdb2cc5fcb9377723799b3c0e125459756
SSDEEP

3072:yLk395hYXJTS4Z+H22Zip6dmDHgG2ojdotyeILc:yQqI4ITsp6dAT2ojdoIeILc

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2252	Au_.exe

Executes dropped EXE 1 IoCs

pid	Process
2252	Au_.exe

Loads dropped DLL 3 IoCs

pid	Process
1340	0f98374016e2f3a77034ecf068624e89_JaffaCakes118.exe
2252	Au_.exe
2252	Au_.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\RunOnce\iWinArcadeIECleanup = "C:\\Users\\Admin\\AppData\\Local\\Temp\\iWinArcadeAutocleanup.bat"	Au_.exe

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

System Information Discovery
T1082

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral1/files/0x003700000001451d-2.dat	nsis_installer_1
behavioral1/files/0x003700000001451d-2.dat	nsis_installer_2

Modifies registry class 6 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000_CLASSES\Software\Microsoft\Windows\CurrentVersion\GameUX\GamesToFindOnWindowsUpgrade	Au_.exe
Key created	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000_CLASSES\Software	Au_.exe
Key created	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000_CLASSES\Software\Microsoft	Au_.exe
Key created	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000_CLASSES\Software\Microsoft\Windows	Au_.exe
Key created	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000_CLASSES\Software\Microsoft\Windows\CurrentVersion	Au_.exe
Key created	\REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000_CLASSES\Software\Microsoft\Windows\CurrentVersion\GameUX	Au_.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2252	Au_.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1340 wrote to memory of 2252	1340	0f98374016e2f3a77034ecf068624e89_JaffaCakes118.exe	28
PID 1340 wrote to memory of 2252	1340	0f98374016e2f3a77034ecf068624e89_JaffaCakes118.exe	28
PID 1340 wrote to memory of 2252	1340	0f98374016e2f3a77034ecf068624e89_JaffaCakes118.exe	28
PID 1340 wrote to memory of 2252	1340	0f98374016e2f3a77034ecf068624e89_JaffaCakes118.exe	28
PID 2252 wrote to memory of 2644	2252	Au_.exe	29
PID 2252 wrote to memory of 2644	2252	Au_.exe	29
PID 2252 wrote to memory of 2644	2252	Au_.exe	29
PID 2252 wrote to memory of 2644	2252	Au_.exe	29
PID 2252 wrote to memory of 2644	2252	Au_.exe	29
PID 2252 wrote to memory of 2644	2252	Au_.exe	29
PID 2252 wrote to memory of 2644	2252	Au_.exe	29
PID 2252 wrote to memory of 2676	2252	Au_.exe	30
PID 2252 wrote to memory of 2676	2252	Au_.exe	30
PID 2252 wrote to memory of 2676	2252	Au_.exe	30
PID 2252 wrote to memory of 2676	2252	Au_.exe	30
PID 2252 wrote to memory of 2676	2252	Au_.exe	30
PID 2252 wrote to memory of 2676	2252	Au_.exe	30
PID 2252 wrote to memory of 2676	2252	Au_.exe	30

C:\Users\Admin\AppData\Local\Temp\0f98374016e2f3a77034ecf068624e89_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\0f98374016e2f3a77034ecf068624e89_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1340
- C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe
  "C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe" _?=C:\Users\Admin\AppData\Local\Temp\
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Modifies registry class
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of WriteProcessMemory
  PID:2252
- - C:\Windows\SysWOW64\regsvr32.exe
    "C:\Windows\system32\regsvr32.exe" /s /u "C:\Users\Admin\AppData\Local\Temp\iWinGamesHookIE.dll"
    3⤵
    PID:2644
- - C:\Windows\SysWOW64\regsvr32.exe
    "C:\Windows\system32\regsvr32.exe" /s /u "C:\Users\Admin\AppData\Local\Temp\iWinInfo.dll"
    3⤵
    PID:2676

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

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\nsy276F.tmp\GameuxInstallHelper.dll

Filesize
94KB

MD5
4d3ac88054df63fc810427bdaa96c458

SHA1
e4d554e03ba91f6b53a2a80253b339f56e303c94

SHA256
b07ffcd0af80f6b9fba09abe816ba2f0ff0d336639f1768fc317291bc635ece6

SHA512
d4732ad89bbb19b316dff1b9c534acf98bb985c89d1295f08e24b21531123426500b3712979dda2f0e941a5969c0cbca15bbd52f6c167653f96a494a6677ca54

Download Submit
\Users\Admin\AppData\Local\Temp\nsy276F.tmp\System.dll

Filesize
11KB

MD5
00a0194c20ee912257df53bfe258ee4a

SHA1
d7b4e319bc5119024690dc8230b9cc919b1b86b2

SHA256
dc4da2ccadb11099076926b02764b2b44ad8f97cd32337421a4cc21a3f5448f3

SHA512
3b38a2c17996c3b77ebf7b858a6c37415615e756792132878d8eddbd13cb06710b7da0e8b58104768f8e475fc93e8b44b3b1ab6f70ddf52edee111aaf5ef5667

Download Submit
\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe

Filesize
124KB

MD5
0f98374016e2f3a77034ecf068624e89

SHA1
6c363894525531dfd2135d648cbd18341c0e0c53

SHA256
3958f341474249b0fc1772c46bf4b2a8f6531bea26caceb44ec5c6c7aa1619cb

SHA512
2d6e5e928a23767203c86a01e9cc9bad99e430d57175a71b7743deccd2b665dfa5e88e7614825709b446b107edef74fdb2cc5fcb9377723799b3c0e125459756

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads