b653631708cdf4b2ec872b4dca10f3c23380c7a2b2029e20f23b590602d1bcfe

max time kernel
151s
max time network
34s
platform
windows7_x64
resource
win7-20230705-en
resource tags

arch:x64arch:x86image:win7-20230705-enlocale:en-usos:windows7-x64system
submitted
06/07/2023, 18:27

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General

Target

e1315.obi
Size

1KB
MD5

988f3ecf99b1d9444b5391ea3350d7fc
SHA1

5a498f9e5b79aeaec9618a1f244fa0def325b34b
SHA256

2b07eac5177646c70bac672a7a8e0c45bee2a2b04d9a29b278cd025c67e59d15
SHA512

24f041418a5fbb636ac7b62704de026940b30da2783cc492b49e5abb29ccce6c6a6345e7cfe8f42ea917a5ffc3f9298f00a561a41aea82891c4a64a3ab76bd5d

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-1-5-21-511725148-388773979-2853099937-1000_CLASSES\obi_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-511725148-388773979-2853099937-1000_CLASSES\obi_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-511725148-388773979-2853099937-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-511725148-388773979-2853099937-1000_CLASSES\obi_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-511725148-388773979-2853099937-1000_CLASSES\obi_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-511725148-388773979-2853099937-1000_CLASSES\obi_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-511725148-388773979-2853099937-1000_CLASSES\.obi	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-511725148-388773979-2853099937-1000_CLASSES\.obi\ = "obi_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-511725148-388773979-2853099937-1000_CLASSES\obi_auto_file\shell	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3004	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
3004	AcroRd32.exe
3004	AcroRd32.exe
3004	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2148 wrote to memory of 2912	2148	cmd.exe	28
PID 2148 wrote to memory of 2912	2148	cmd.exe	28
PID 2148 wrote to memory of 2912	2148	cmd.exe	28
PID 2912 wrote to memory of 3004	2912	rundll32.exe	29
PID 2912 wrote to memory of 3004	2912	rundll32.exe	29
PID 2912 wrote to memory of 3004	2912	rundll32.exe	29
PID 2912 wrote to memory of 3004	2912	rundll32.exe	29

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\e1315.obi
1⤵
- Suspicious use of WriteProcessMemory
PID:2148
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\e1315.obi
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2912
- - 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\e1315.obi"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:3004

Network

MITRE ATT&CK Enterprise v6

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
a5d679eee521884ba80d77219f3d9416

SHA1
297ffa7da6566cafcb29be12b7c2c946cb5335d1

SHA256
24d1d1d330f67d2b17fc374ec8292e2f5a3a1a59c96757b6b867c81c7b68220a

SHA512
080ffc71bcd6840d123a0bc9008e34c3684a82267ee3b7adc0ffce97306b74caee394a9f4eb552a31ea309bd5f4f2bde15ec0cddc4937d364e05bc1384d2f017

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