Malware Analysis Report

2025-01-19 07:10

Sample ID 240624-stt3xasenl
Target 094dc9102ecebaa2344df518d15843c7_JaffaCakes118
SHA256 b56d5fe5c6e4e0f60a61085cc24876b5aec62ca72d6d08ae91100f39fbcdd31b
Tags
ramnit banker spyware stealer trojan upx worm
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

b56d5fe5c6e4e0f60a61085cc24876b5aec62ca72d6d08ae91100f39fbcdd31b

Threat Level: Known bad

The file 094dc9102ecebaa2344df518d15843c7_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

ramnit banker spyware stealer trojan upx worm

Ramnit

Executes dropped EXE

Loads dropped DLL

UPX packed file

Drops file in System32 directory

Program crash

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-06-24 15:25

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-24 15:25

Reported

2024-06-24 15:28

Platform

win7-20240611-en

Max time kernel

122s

Max time network

125s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\094dc9102ecebaa2344df518d15843c7_JaffaCakes118.dll,#1

Signatures

Ramnit

trojan spyware stealer worm banker ramnit

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32mgr.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32mgr.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32mgr.exe N/A

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\rundll32mgr.exe C:\Windows\SysWOW64\rundll32.exe N/A

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\rundll32mgr.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\094dc9102ecebaa2344df518d15843c7_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\094dc9102ecebaa2344df518d15843c7_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32mgr.exe

C:\Windows\SysWOW64\rundll32mgr.exe

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2244 -s 180

Network

N/A

Files

memory/2124-1-0x0000000010000000-0x0000000010028000-memory.dmp

\Windows\SysWOW64\rundll32mgr.exe

MD5 fe36fb1073e6f8fa14d7250501a29aaf
SHA1 6c7e01278362797dabcff3e666b68227cb9af10f
SHA256 f34e5af97ccb3574f7d5343246138daf979bfd1f9c37590e9a41f6420ddb3bb6
SHA512 8584c008c5780352f634c37b7f46543a26280b57577b675f6e72185bfc1d95f771d210d799d704eceaba509ebfd2796fb43829495d5b2a568c741ad2d44f882f

memory/2244-9-0x0000000000400000-0x000000000042A000-memory.dmp

\Users\Admin\AppData\Local\Temp\~TM13BF.tmp

MD5 d124f55b9393c976963407dff51ffa79
SHA1 2c7bbedd79791bfb866898c85b504186db610b5d
SHA256 ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef
SHA512 278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06

\Users\Admin\AppData\Local\Temp\~TM13D0.tmp

MD5 9b98d47916ead4f69ef51b56b0c2323c
SHA1 290a80b4ded0efc0fd00816f373fcea81a521330
SHA256 96e0ae104c9662d0d20fdf59844c2d18334e5847b6c4fc7f8ce4b3b87f39887b
SHA512 68b67021f228d8d71df4deb0b6388558b2f935a6aa466a12199cd37ada47ee588ea407b278d190d3a498b0ef3f5f1a2573a469b7ea5561ab2e7055c45565fe94

memory/2244-16-0x0000000000400000-0x000000000042A000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-24 15:25

Reported

2024-06-24 15:28

Platform

win10v2004-20240226-en

Max time kernel

141s

Max time network

148s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\094dc9102ecebaa2344df518d15843c7_JaffaCakes118.dll,#1

Signatures

Ramnit

trojan spyware stealer worm banker ramnit

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32mgr.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32mgr.exe N/A

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\rundll32mgr.exe C:\Windows\SysWOW64\rundll32.exe N/A

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\rundll32mgr.exe

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 228 wrote to memory of 4012 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 228 wrote to memory of 4012 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 228 wrote to memory of 4012 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4012 wrote to memory of 664 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32mgr.exe
PID 4012 wrote to memory of 664 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32mgr.exe
PID 4012 wrote to memory of 664 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32mgr.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\094dc9102ecebaa2344df518d15843c7_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\094dc9102ecebaa2344df518d15843c7_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32mgr.exe

C:\Windows\SysWOW64\rundll32mgr.exe

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 664 -ip 664

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4072 --field-trial-handle=1928,i,13242902252791919845,10377620236057253993,262144 --variations-seed-version /prefetch:8

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 664 -s 480

Network

Country Destination Domain Proto
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 80.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 32.251.17.2.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 1.181.190.20.in-addr.arpa udp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
GB 142.250.187.234:443 chromewebstore.googleapis.com tcp
US 8.8.8.8:53 234.187.250.142.in-addr.arpa udp
US 8.8.8.8:53 28.73.42.20.in-addr.arpa udp

Files

memory/4012-0-0x0000000010000000-0x0000000010028000-memory.dmp

C:\Windows\SysWOW64\rundll32mgr.exe

MD5 fe36fb1073e6f8fa14d7250501a29aaf
SHA1 6c7e01278362797dabcff3e666b68227cb9af10f
SHA256 f34e5af97ccb3574f7d5343246138daf979bfd1f9c37590e9a41f6420ddb3bb6
SHA512 8584c008c5780352f634c37b7f46543a26280b57577b675f6e72185bfc1d95f771d210d799d704eceaba509ebfd2796fb43829495d5b2a568c741ad2d44f882f

memory/664-5-0x0000000000400000-0x000000000042A000-memory.dmp

memory/664-6-0x0000000000400000-0x000000000042A000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\~TM7318.tmp

MD5 4f3387277ccbd6d1f21ac5c07fe4ca68
SHA1 e16506f662dc92023bf82def1d621497c8ab5890
SHA256 767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac
SHA512 9da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219

memory/664-10-0x0000000000400000-0x000000000042A000-memory.dmp