c8ed4ce42d2f0ccc51b3e9f8f2a329d3e4f71350c80a70c786dc9eea8a7d18c5

Analysis

max time kernel
603s
max time network
620s
platform
windows7_x64
resource
win7-20231020-en
resource tags

arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system
submitted
26/11/2023, 16:38

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General

Target

Lethal Company/MonoBleedingEdge/etc/mono/4.5/Browsers/Compat.browser
Size

1KB
MD5

0d831c1264b5b32a39fa347de368fe48
SHA1

187dff516f9448e63ea5078190b3347922c4b3eb
SHA256

8a1082057ac5681dcd4e9c227ed7fb8eb42ac1618963b5de3b65739dd77e2741
SHA512

4b7549eda1f8ed2c4533d056b62ca5030445393f9c6003e5ee47301ff7f44b4bd5022b74d54f571aa890b6e4593c6eded1a881500ac5ba2a720dc0ff280300af

Score

3^/10

Malware Config

Signatures

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

System Information Discovery
T1082

Modifies registry class 9 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1154728922-3261336865-3456416385-1000_CLASSES\.browser\ = "browser_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1154728922-3261336865-3456416385-1000_CLASSES\browser_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1154728922-3261336865-3456416385-1000_CLASSES\browser_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1154728922-3261336865-3456416385-1000_CLASSES\browser_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1154728922-3261336865-3456416385-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1154728922-3261336865-3456416385-1000_CLASSES\browser_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1154728922-3261336865-3456416385-1000_CLASSES\browser_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1154728922-3261336865-3456416385-1000_CLASSES\.browser	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1154728922-3261336865-3456416385-1000_CLASSES\browser_auto_file\shell\Read	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2872	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2872	AcroRd32.exe
2872	AcroRd32.exe
2872	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2112 wrote to memory of 2132	2112	cmd.exe	29
PID 2112 wrote to memory of 2132	2112	cmd.exe	29
PID 2112 wrote to memory of 2132	2112	cmd.exe	29
PID 2132 wrote to memory of 2872	2132	rundll32.exe	32
PID 2132 wrote to memory of 2872	2132	rundll32.exe	32
PID 2132 wrote to memory of 2872	2132	rundll32.exe	32
PID 2132 wrote to memory of 2872	2132	rundll32.exe	32

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\Lethal Company\MonoBleedingEdge\etc\mono\4.5\Browsers\Compat.browser"
1⤵
- Suspicious use of WriteProcessMemory
PID:2112
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Lethal Company\MonoBleedingEdge\etc\mono\4.5\Browsers\Compat.browser
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2132
- - C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
    "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\Lethal Company\MonoBleedingEdge\etc\mono\4.5\Browsers\Compat.browser"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2872

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
679893563dfa5d4b7526fa0fde063476

SHA1
d273eadca47872c296bdaaf2175b872b1579fc35

SHA256
479c5955f6d41848f2b584d44522147aa33027ca4e8efb843f54030cf0b91211

SHA512
89287ba4834910308a1fceacdd3be76e9580430df76fe8a685d857a224c214fa14d85886270e2c3b7541c357646c5632ee557c4d93a9726458fae293c8530d64

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