479f024e77b53300da8dd0e0d0243dca32af5c1aefaa2f254127bc59f2901d93

Analysis

max time kernel
121s
max time network
128s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
08-07-2024 11:24

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General

Target

chrome_200_percent.pak
Size

175KB
MD5

5604b67e3f03ab2741f910a250c91137
SHA1

a4bb15ac7914c22575f1051a29c448f215fe027f
SHA256

1408387e87cb5308530def6ce57bdc4e0abbbaa9e70f687fd6c3a02a56a0536c
SHA512

5e6f875068792e862b1fc8bb7b340ac0f1f4c51e53e50be81a5af8575ca3591f4e7eb9239890178b17c5a8ff4ebb23719190d7db0bd8a9aa6dcb4308ffa9a34d
SSDEEP

3072:+DQYaEQN6AJPRJL2myFhPNafR54x5GMR+F44ffbdZnYw9p4AbIVGYoDd+HxNK/r4:+DQYaNN68RwmU0gx5GMRejnbdZnVE6YR

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

Processes:

rundll32.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\pak_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\.pak\ = "pak_auto_file"	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\pak_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\pak_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\.pak	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\pak_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid process

2724 AcroRd32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

2724 AcroRd32.exe
2724 AcroRd32.exe

pid	process
2724	AcroRd32.exe

pid	process
2724	AcroRd32.exe
2724	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 1856 wrote to memory of 2168	1856	cmd.exe	rundll32.exe
PID 1856 wrote to memory of 2168	1856	cmd.exe	rundll32.exe
PID 1856 wrote to memory of 2168	1856	cmd.exe	rundll32.exe
PID 2168 wrote to memory of 2724	2168	rundll32.exe	AcroRd32.exe
PID 2168 wrote to memory of 2724	2168	rundll32.exe	AcroRd32.exe
PID 2168 wrote to memory of 2724	2168	rundll32.exe	AcroRd32.exe
PID 2168 wrote to memory of 2724	2168	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\chrome_200_percent.pak
1⤵
- Suspicious use of WriteProcessMemory
PID:1856

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\chrome_200_percent.pak
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2168

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\chrome_200_percent.pak"
3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:2724

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents
Filesize
3KB

MD5
055559596d0cc9afe6704b2ae0f9d798

SHA1
da6adff4df3bcdaab501f3fa01db84bad816d799

SHA256
4dde2cd70dd209d1ae5e252cedba8d0e15c2f77fab4e99870385b9079f1ac1e8

SHA512
1066bd49971d5150827e2e52a6fab2ef2a25f4ace5144a3c8aed1b1f27699191febc3325f8f76932fcd48c6a30838f00d1de7ecad40750d98995f937a6df714b

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