1cbdbc2553018d5afbfe7dc7755f54462660a48c6774389e3ee899ead9926f1e

Analysis

max time kernel
117s
max time network
123s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
19/01/2024, 10:05

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General

Target

com/appsflyer/oaid/R$layout.class
Size

2KB
MD5

5d9fa339aaf8ce419c5114c3e5e268b4
SHA1

813e53f3440817d3d85d996099b23baf5c7a56c7
SHA256

33280f5ca68dbb56264322f9af38d73a22dd551876c7999d01ca5563e3442f4c
SHA512

564d2027bba1c54024a4ec2c8c878b6e95e71f8c9ec6bd1e8f86912575b058d31f8108a5d7fdde711c8a8f7501ef2ad2d52fdce2b4e916ec69e314b2546cdc05

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-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\class_auto_file\shell\Read	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\class_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\class_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\.class\ = "class_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\class_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\class_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\.class	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\class_auto_file\shell	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2800	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2800	AcroRd32.exe
2800	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2224 wrote to memory of 2716	2224	cmd.exe	29
PID 2224 wrote to memory of 2716	2224	cmd.exe	29
PID 2224 wrote to memory of 2716	2224	cmd.exe	29
PID 2716 wrote to memory of 2800	2716	rundll32.exe	30
PID 2716 wrote to memory of 2800	2716	rundll32.exe	30
PID 2716 wrote to memory of 2800	2716	rundll32.exe	30
PID 2716 wrote to memory of 2800	2716	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\com\appsflyer\oaid\R$layout.class
1⤵
- Suspicious use of WriteProcessMemory
PID:2224
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\com\appsflyer\oaid\R$layout.class
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2716
- - 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\com\appsflyer\oaid\R$layout.class"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2800

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

Replay Monitor

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Downloads

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

Filesize
3KB

MD5
2875d91084ddadcc2bd5184b58d0f68c

SHA1
f38023420b68b85f6177bde44697913969d52934

SHA256
586cf3226f09bd1619f15ff71303ff59d9179b99238f127a72fdabf05201c1bf

SHA512
5c3aa9e15fa91925239331b34543bd025db3ed5c965842ff852a402bca5ca76e3bbf9575621dd4b42353cdffcd9a5a6db9e36b339aeb7d3f1b5652b9b853935e

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