e10e4e255af0ba3293aed0222096b70d627a0a8217f1d3d76c2d6813e3074144

Analysis

max time kernel
120s
max time network
137s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
20/04/2024, 21:04

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General

Target

chrome_200_percent.pak
Size

175KB
MD5

48515d600258d60019c6b9c6421f79f6
SHA1

0ef0b44641d38327a360aa6954b3b6e5aab2af16
SHA256

07bee34e189fe9a8789aed78ea59ad41414b6e611e7d74da62f8e6ca36af01ce
SHA512

b7266bc8abc55bd389f594dac0c0641ecf07703f35d769b87e731b5fdf4353316d44f3782a4329b3f0e260dead6b114426ddb1b0fb8cd4a51e0b90635f1191d9
SSDEEP

3072:rDQYaEQN6AJPrSxQCS/qGTafR54x5GMR+F44ffbdZnYw9p4AbIVGYoDd+HxNK/r4:rDQYaNN68rC4/Ygx5GMRejnbdZnVE6YR

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
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pak_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pak_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\.pak	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\.pak\ = "pak_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pak_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pak_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pak_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_CLASSES\pak_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2556	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2556	AcroRd32.exe
2556	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2788 wrote to memory of 1056	2788	cmd.exe	31
PID 2788 wrote to memory of 1056	2788	cmd.exe	31
PID 2788 wrote to memory of 1056	2788	cmd.exe	31
PID 1056 wrote to memory of 2556	1056	rundll32.exe	32
PID 1056 wrote to memory of 2556	1056	rundll32.exe	32
PID 1056 wrote to memory of 2556	1056	rundll32.exe	32
PID 1056 wrote to memory of 2556	1056	rundll32.exe	32

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\chrome_200_percent.pak
1⤵
- Suspicious use of WriteProcessMemory
PID:2788
- 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:1056
- - 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:2556

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
ce9f7f22cf0a5d3abb88cf09e39479c8

SHA1
991d21372d66ef467e120692ae29811a2515f047

SHA256
279f26b67f8c885d0d767e1aeefab604f43c4099869a936cdad1adcd84bdefb7

SHA512
8027c3f13f20def7426ec2fd026792b01617eddec4c02799d309073cde2a879da778dadd493e978db8598e4686026b3c1443b06873acf00c563b7dcc08c8dfa5

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