252f1a88526683b9dd18c1a7371533e989578b5118975adf93cd8a0891e3cbef

Resubmissions

24-03-2022 13:27

220324-qqhvcsecen 10

24-03-2022 13:00

220324-p8slvadhej 10

Analysis

max time kernel
4294176s
max time network
136s
platform
windows7_x64
resource
win7-20220310-en
submitted
24-03-2022 13:27

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General

Target

Win32/Backdoor.Win32.APT34.PoisonFrogC2.7z
Size

8.8MB
MD5

3b6d4a4934ede73be196aa8a9bd83dc7
SHA1

6b91821f2be5586d6e10036d8fb6d52ad710124e
SHA256

00d7aa1301eb8fd81297223562b2bdcaaad25413698295cf189508f7be8e5e25
SHA512

9e0dad6f810b420f3247a631d101359c0e2217a744fad6c1e92967fbdf1a8f4638f8a4818723def3f96a116ae8fd0fcecd8e035b2ddbeeab11e15c793559f069

Score

3^/10

Malware Config

Signatures

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

System Information Discovery
T1082

Modifies registry class 10 IoCs

Processes:

rundll32.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2932610838-281738825-1127631353-1000_CLASSES\7z_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2932610838-281738825-1127631353-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2932610838-281738825-1127631353-1000_CLASSES\7z_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2932610838-281738825-1127631353-1000_CLASSES\.7z	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2932610838-281738825-1127631353-1000_CLASSES\7z_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2932610838-281738825-1127631353-1000_CLASSES\7z_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2932610838-281738825-1127631353-1000_CLASSES\7z_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2932610838-281738825-1127631353-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2932610838-281738825-1127631353-1000_CLASSES\7z_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2932610838-281738825-1127631353-1000_CLASSES\.7z\ = "7z_auto_file"	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 1628 wrote to memory of 288	1628	cmd.exe	rundll32.exe
PID 1628 wrote to memory of 288	1628	cmd.exe	rundll32.exe
PID 1628 wrote to memory of 288	1628	cmd.exe	rundll32.exe
PID 288 wrote to memory of 1940	288	rundll32.exe	AcroRd32.exe
PID 288 wrote to memory of 1940	288	rundll32.exe	AcroRd32.exe
PID 288 wrote to memory of 1940	288	rundll32.exe	AcroRd32.exe
PID 288 wrote to memory of 1940	288	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Win32\Backdoor.Win32.APT34.PoisonFrogC2.7z
1⤵
- Suspicious use of WriteProcessMemory
PID:1628

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Win32\Backdoor.Win32.APT34.PoisonFrogC2.7z
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:288

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\Win32\Backdoor.Win32.APT34.PoisonFrogC2.7z"
3⤵
PID:1940

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/288-76-0x0000000000000000-mapping.dmp

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memory/1628-54-0x000007FEFBA61000-0x000007FEFBA63000-memory.dmp

Filesize
8KB

Download
memory/1940-81-0x0000000000000000-mapping.dmp

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memory/1940-82-0x0000000075CA1000-0x0000000075CA3000-memory.dmp

Filesize
8KB

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