Malware Analysis Report

2025-01-19 07:03

Sample ID 240625-xtsbjaxdkg
Target 0f31f2c7086406e97e2078d969aa40b3_JaffaCakes118
SHA256 513bd64b2b9995c0445ab09b16f49ab86bee9cb6b4dd250621c0e6427972f7a5
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

513bd64b2b9995c0445ab09b16f49ab86bee9cb6b4dd250621c0e6427972f7a5

Threat Level: Known bad

The file 0f31f2c7086406e97e2078d969aa40b3_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

Suspicious use of SetThreadContext

Program crash

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-06-25 19:09

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-25 19:09

Reported

2024-06-25 19:11

Platform

win7-20240508-en

Max time kernel

121s

Max time network

125s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\0f31f2c7086406e97e2078d969aa40b3_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
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
N/A N/A N/A N/A
N/A N/A N/A N/A
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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2424 set thread context of 3052 N/A C:\Windows\SysWOW64\rundll32mgr.exe C:\Windows\SysWOW64\rundll32mgr.exe

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2212 wrote to memory of 2224 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2212 wrote to memory of 2224 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2212 wrote to memory of 2224 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2212 wrote to memory of 2224 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2212 wrote to memory of 2224 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2212 wrote to memory of 2224 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2212 wrote to memory of 2224 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2224 wrote to memory of 2424 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32mgr.exe
PID 2224 wrote to memory of 2424 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32mgr.exe
PID 2224 wrote to memory of 2424 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32mgr.exe
PID 2224 wrote to memory of 2424 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32mgr.exe
PID 2224 wrote to memory of 1688 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\WerFault.exe
PID 2224 wrote to memory of 1688 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\WerFault.exe
PID 2224 wrote to memory of 1688 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\WerFault.exe
PID 2224 wrote to memory of 1688 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\WerFault.exe
PID 2424 wrote to memory of 3052 N/A C:\Windows\SysWOW64\rundll32mgr.exe C:\Windows\SysWOW64\rundll32mgr.exe
PID 2424 wrote to memory of 3052 N/A C:\Windows\SysWOW64\rundll32mgr.exe C:\Windows\SysWOW64\rundll32mgr.exe
PID 2424 wrote to memory of 3052 N/A C:\Windows\SysWOW64\rundll32mgr.exe C:\Windows\SysWOW64\rundll32mgr.exe
PID 2424 wrote to memory of 3052 N/A C:\Windows\SysWOW64\rundll32mgr.exe C:\Windows\SysWOW64\rundll32mgr.exe
PID 2424 wrote to memory of 3052 N/A C:\Windows\SysWOW64\rundll32mgr.exe C:\Windows\SysWOW64\rundll32mgr.exe
PID 2424 wrote to memory of 3052 N/A C:\Windows\SysWOW64\rundll32mgr.exe C:\Windows\SysWOW64\rundll32mgr.exe
PID 2424 wrote to memory of 3052 N/A C:\Windows\SysWOW64\rundll32mgr.exe C:\Windows\SysWOW64\rundll32mgr.exe
PID 2424 wrote to memory of 3052 N/A C:\Windows\SysWOW64\rundll32mgr.exe C:\Windows\SysWOW64\rundll32mgr.exe
PID 2424 wrote to memory of 3052 N/A C:\Windows\SysWOW64\rundll32mgr.exe C:\Windows\SysWOW64\rundll32mgr.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\0f31f2c7086406e97e2078d969aa40b3_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\0f31f2c7086406e97e2078d969aa40b3_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 2224 -s 220

C:\Windows\SysWOW64\rundll32mgr.exe

"C:\Windows\SysWOW64\rundll32mgr.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3052 -s 100

Network

N/A

Files

\Windows\SysWOW64\rundll32mgr.exe

MD5 2eb3806b294427bfb90d53f12ad948c1
SHA1 879fb013938ff60cfa4b7c4d2b459766c4583ad2
SHA256 f657c80eb5c738fa74ee842253989943ba52684938043afe62355b2ff40edd28
SHA512 086aef7280ac5cc53ef94b82ad5123dbc5b6118dbb41d57a893fe142773b06e8aa8f21dd00d8d06cb99923238e49b4a83fcb1b79e84b6a0adfd866e994ee17a1

memory/2224-2-0x0000000074AB0000-0x0000000074B04000-memory.dmp

memory/2224-4-0x0000000074A50000-0x0000000074AA4000-memory.dmp

memory/2224-5-0x00000000001F0000-0x000000000023F000-memory.dmp

memory/2224-1-0x0000000074A90000-0x0000000074AE4000-memory.dmp

memory/2224-12-0x00000000001F0000-0x000000000023F000-memory.dmp

memory/2424-14-0x0000000000020000-0x0000000000023000-memory.dmp

memory/2424-13-0x0000000000400000-0x000000000044F000-memory.dmp

memory/3052-19-0x0000000000400000-0x0000000000463000-memory.dmp

memory/3052-21-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/3052-23-0x0000000000400000-0x0000000000463000-memory.dmp

memory/2424-30-0x0000000000400000-0x000000000044F000-memory.dmp

memory/3052-29-0x0000000000400000-0x0000000000463000-memory.dmp

memory/3052-32-0x0000000000400000-0x0000000000463000-memory.dmp

memory/3052-28-0x0000000000400000-0x0000000000463000-memory.dmp

memory/3052-26-0x0000000000400000-0x0000000000463000-memory.dmp

\Users\Admin\AppData\Local\Temp\~TM30C1.tmp

MD5 d124f55b9393c976963407dff51ffa79
SHA1 2c7bbedd79791bfb866898c85b504186db610b5d
SHA256 ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef
SHA512 278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06

memory/3052-36-0x00000000774B0000-0x00000000774B1000-memory.dmp

memory/3052-37-0x00000000774B0000-0x00000000774B2000-memory.dmp

memory/3052-35-0x00000000774AF000-0x00000000774B1000-memory.dmp

\Users\Admin\AppData\Local\Temp\~TM313F.tmp

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

memory/3052-41-0x00000000756A4000-0x00000000756A5000-memory.dmp

memory/3052-43-0x0000000075610000-0x0000000075720000-memory.dmp

memory/3052-47-0x0000000075610000-0x0000000075720000-memory.dmp

memory/3052-46-0x0000000000400000-0x0000000000463000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-25 19:09

Reported

2024-06-25 19:11

Platform

win10v2004-20240508-en

Max time kernel

126s

Max time network

127s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\0f31f2c7086406e97e2078d969aa40b3_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
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
N/A N/A N/A N/A
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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4824 set thread context of 3956 N/A C:\Windows\SysWOW64\rundll32mgr.exe C:\Windows\SysWOW64\rundll32mgr.exe

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4980 wrote to memory of 3180 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4980 wrote to memory of 3180 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4980 wrote to memory of 3180 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3180 wrote to memory of 4824 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32mgr.exe
PID 3180 wrote to memory of 4824 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32mgr.exe
PID 3180 wrote to memory of 4824 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\rundll32mgr.exe
PID 4824 wrote to memory of 3956 N/A C:\Windows\SysWOW64\rundll32mgr.exe C:\Windows\SysWOW64\rundll32mgr.exe
PID 4824 wrote to memory of 3956 N/A C:\Windows\SysWOW64\rundll32mgr.exe C:\Windows\SysWOW64\rundll32mgr.exe
PID 4824 wrote to memory of 3956 N/A C:\Windows\SysWOW64\rundll32mgr.exe C:\Windows\SysWOW64\rundll32mgr.exe
PID 4824 wrote to memory of 3956 N/A C:\Windows\SysWOW64\rundll32mgr.exe C:\Windows\SysWOW64\rundll32mgr.exe
PID 4824 wrote to memory of 3956 N/A C:\Windows\SysWOW64\rundll32mgr.exe C:\Windows\SysWOW64\rundll32mgr.exe
PID 4824 wrote to memory of 3956 N/A C:\Windows\SysWOW64\rundll32mgr.exe C:\Windows\SysWOW64\rundll32mgr.exe
PID 4824 wrote to memory of 3956 N/A C:\Windows\SysWOW64\rundll32mgr.exe C:\Windows\SysWOW64\rundll32mgr.exe
PID 4824 wrote to memory of 3956 N/A C:\Windows\SysWOW64\rundll32mgr.exe C:\Windows\SysWOW64\rundll32mgr.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\0f31f2c7086406e97e2078d969aa40b3_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\0f31f2c7086406e97e2078d969aa40b3_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 420 -p 3180 -ip 3180

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3180 -s 608

C:\Windows\SysWOW64\rundll32mgr.exe

"C:\Windows\SysWOW64\rundll32mgr.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3956 -ip 3956

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3956 -s 296

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 --field-trial-handle=3804,i,1809100026287847100,9768898026582633513,262144 --variations-seed-version --mojo-platform-channel-handle=4024 /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 80.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 4.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 21.121.18.2.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp

Files

memory/3180-1-0x00000000753B0000-0x0000000075404000-memory.dmp

C:\Windows\SysWOW64\rundll32mgr.exe

MD5 2eb3806b294427bfb90d53f12ad948c1
SHA1 879fb013938ff60cfa4b7c4d2b459766c4583ad2
SHA256 f657c80eb5c738fa74ee842253989943ba52684938043afe62355b2ff40edd28
SHA512 086aef7280ac5cc53ef94b82ad5123dbc5b6118dbb41d57a893fe142773b06e8aa8f21dd00d8d06cb99923238e49b4a83fcb1b79e84b6a0adfd866e994ee17a1

memory/4824-6-0x00000000001C0000-0x00000000001C3000-memory.dmp

memory/4824-5-0x0000000000400000-0x000000000044F000-memory.dmp

memory/3180-9-0x00000000753B0000-0x0000000075404000-memory.dmp

memory/3956-10-0x0000000000400000-0x0000000000463000-memory.dmp

memory/3956-14-0x0000000000400000-0x0000000000463000-memory.dmp

memory/4824-18-0x00000000001C0000-0x00000000001C3000-memory.dmp

memory/3956-21-0x0000000000400000-0x0000000000463000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\~TME6D6.tmp

MD5 4f3387277ccbd6d1f21ac5c07fe4ca68
SHA1 e16506f662dc92023bf82def1d621497c8ab5890
SHA256 767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac
SHA512 9da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219

memory/4824-17-0x0000000000400000-0x000000000044F000-memory.dmp

memory/3956-13-0x0000000000400000-0x0000000000463000-memory.dmp