Malware Analysis Report

2025-03-15 05:53

Sample ID 240628-rk8z2awhpn
Target 1a706d5383c7092d51ca8e7f12530649_JaffaCakes118
SHA256 81d522b210d792d32e3d44735e3c7c39a57eae172f5520fa4b55ed1007efdea0
Tags
persistence vmprotect
score
8/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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
8/10

SHA256

81d522b210d792d32e3d44735e3c7c39a57eae172f5520fa4b55ed1007efdea0

Threat Level: Likely malicious

The file 1a706d5383c7092d51ca8e7f12530649_JaffaCakes118 was found to be: Likely malicious.

Malicious Activity Summary

persistence vmprotect

Server Software Component: Terminal Services DLL

Checks computer location settings

Loads dropped DLL

VMProtect packed file

Deletes itself

Drops file in System32 directory

Enumerates physical storage devices

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-28 14:16

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-28 14:16

Reported

2024-06-28 14:18

Platform

win7-20240611-en

Max time kernel

130s

Max time network

130s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1a706d5383c7092d51ca8e7f12530649_JaffaCakes118.exe"

Signatures

Server Software Component: Terminal Services DLL

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\.Net CLR\Parameters\ServiceDll = "C:\\Windows\\system32\\f7605cb.dll" C:\Users\Admin\AppData\Local\Temp\1a706d5383c7092d51ca8e7f12530649_JaffaCakes118.exe N/A

Deletes itself

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

VMProtect packed file

vmprotect
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\f7605cb.dll C:\Users\Admin\AppData\Local\Temp\1a706d5383c7092d51ca8e7f12530649_JaffaCakes118.exe N/A

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1a706d5383c7092d51ca8e7f12530649_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\1a706d5383c7092d51ca8e7f12530649_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\1a706d5383c7092d51ca8e7f12530649_JaffaCakes118.exe"

C:\Windows\SysWOW64\svchost.exe

C:\Windows\SysWOW64\svchost.exe -k ".Net CLR"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c del "C:\Users\Admin\AppData\Local\Temp\1A706D~1.EXE" > nul

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe c:\windows\system32\f7605cb.dll, Launch

Network

Country Destination Domain Proto
US 8.8.8.8:53 kisme.3322.org udp

Files

memory/2708-28-0x0000000074894000-0x0000000074895000-memory.dmp

memory/2708-27-0x0000000074760000-0x00000000748E9000-memory.dmp

\Windows\SysWOW64\f7605cb.dll

MD5 e4060e2410ea64e00f85d83bfb137bfb
SHA1 f230ecb9b0d8bc88ec0f82ce74c80143b2e5458a
SHA256 fe30c3f8c5e47e7a9b51404357dd96281062f08ff6a2230f1edf5f807bd43c75
SHA512 83a518435605bd7b7150539061dfb8b63da24cbc59c9d4db909120314e4eae24a0cb1e675b52c4567365f261d9bc6cda54a6a901b243d40b0f3238ad1e3175dd

memory/2104-22-0x0000000000400000-0x0000000000516000-memory.dmp

memory/2104-21-0x0000000000220000-0x0000000000260000-memory.dmp

memory/2600-18-0x0000000074760000-0x00000000748E9000-memory.dmp

memory/2104-14-0x0000000074760000-0x00000000748E9000-memory.dmp

memory/2104-9-0x0000000000401000-0x0000000000408000-memory.dmp

memory/2104-10-0x0000000000400000-0x0000000000516000-memory.dmp

memory/2104-8-0x0000000000400000-0x0000000000516000-memory.dmp

memory/2104-7-0x0000000001DF0000-0x0000000001F00000-memory.dmp

memory/2104-6-0x0000000000400000-0x0000000000516000-memory.dmp

memory/2104-5-0x0000000000400000-0x0000000000516000-memory.dmp

memory/2104-4-0x0000000000400000-0x0000000000516000-memory.dmp

memory/2104-3-0x0000000000220000-0x0000000000260000-memory.dmp

memory/2104-2-0x00000000002E0000-0x00000000002E1000-memory.dmp

memory/2104-1-0x0000000000220000-0x0000000000260000-memory.dmp

memory/2104-0-0x0000000000400000-0x0000000000516000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-28 14:16

Reported

2024-06-28 14:18

Platform

win10v2004-20240611-en

Max time kernel

147s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1a706d5383c7092d51ca8e7f12530649_JaffaCakes118.exe"

Signatures

Server Software Component: Terminal Services DLL

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\.Net CLR\Parameters\ServiceDll = "C:\\Windows\\system32\\e57d522.dll" C:\Users\Admin\AppData\Local\Temp\1a706d5383c7092d51ca8e7f12530649_JaffaCakes118.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\1a706d5383c7092d51ca8e7f12530649_JaffaCakes118.exe N/A

VMProtect packed file

vmprotect
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\e57d522.dll C:\Users\Admin\AppData\Local\Temp\1a706d5383c7092d51ca8e7f12530649_JaffaCakes118.exe N/A

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1a706d5383c7092d51ca8e7f12530649_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\1a706d5383c7092d51ca8e7f12530649_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\1a706d5383c7092d51ca8e7f12530649_JaffaCakes118.exe"

C:\Windows\SysWOW64\svchost.exe

C:\Windows\SysWOW64\svchost.exe -k ".Net CLR"

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe c:\windows\system32\e57d522.dll, Launch

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c del "C:\Users\Admin\AppData\Local\Temp\1A706D~1.EXE" > nul

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 --field-trial-handle=2736,i,11069752405888604640,8928124405695604965,262144 --variations-seed-version --mojo-platform-channel-handle=4192 /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 kisme.3322.org udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 23.181.190.20.in-addr.arpa udp
US 8.8.8.8:53 kisme.3322.org udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 3.181.190.20.in-addr.arpa udp
US 8.8.8.8:53 kisme.3322.org udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 97.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 kisme.3322.org udp
US 8.8.8.8:53 80.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 kisme.3322.org udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 kisme.3322.org udp
US 8.8.8.8:53 kisme.3322.org udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp

Files

memory/1564-0-0x0000000000400000-0x0000000000516000-memory.dmp

memory/1564-7-0x0000000000400000-0x0000000000516000-memory.dmp

memory/1564-5-0x0000000000400000-0x0000000000516000-memory.dmp

memory/1564-14-0x0000000000401000-0x0000000000408000-memory.dmp

memory/1564-13-0x00000000755F0000-0x0000000075779000-memory.dmp

memory/1564-12-0x0000000002280000-0x0000000002420000-memory.dmp

C:\Windows\SysWOW64\e57d522.dll

MD5 e4060e2410ea64e00f85d83bfb137bfb
SHA1 f230ecb9b0d8bc88ec0f82ce74c80143b2e5458a
SHA256 fe30c3f8c5e47e7a9b51404357dd96281062f08ff6a2230f1edf5f807bd43c75
SHA512 83a518435605bd7b7150539061dfb8b63da24cbc59c9d4db909120314e4eae24a0cb1e675b52c4567365f261d9bc6cda54a6a901b243d40b0f3238ad1e3175dd

memory/1564-9-0x0000000002130000-0x0000000002220000-memory.dmp

memory/1564-6-0x0000000000400000-0x0000000000516000-memory.dmp

memory/1564-4-0x0000000000400000-0x0000000000516000-memory.dmp

memory/1564-3-0x0000000000740000-0x0000000000780000-memory.dmp

memory/1564-2-0x0000000000780000-0x0000000000781000-memory.dmp

memory/1564-1-0x0000000000740000-0x0000000000780000-memory.dmp

memory/3284-19-0x00000000755F0000-0x0000000075779000-memory.dmp

memory/3224-21-0x00000000755F0000-0x0000000075779000-memory.dmp

memory/1564-25-0x0000000000740000-0x0000000000780000-memory.dmp

memory/1564-24-0x0000000000400000-0x0000000000516000-memory.dmp