61d6a12a61b3136a89d22eb3d4ee03e5456e64d7c7ada5381142f8e275d52ba9

Analysis

max time kernel
198s
max time network
69s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
29/11/2022, 12:48

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General

Target

eteyvfyhrefyscymb/fqafapsmembgnmmyshty.class
Size

13KB
MD5

058999fcc13d9a0ccce972b9e77a3a4d
SHA1

1549cb407f21bc2ecbcf34e940a4267ec6b2be9d
SHA256

6efedef6c78e819364a6fa8ea68de8c3fa0d77c6aa6a7b93fa06d863cea15dc5
SHA512

f8dc0a5079b2609b74d83c974ebb8580dfd12ef22f1158b1991001fd0d04eb50c1dec3c4b523e57ca15e21aeb825e97accbd44273be053c3ca085eb3523c2248
SSDEEP

384:ghg70EykSE9kwTnPUUODLrd337av1d5XNO:gO71EE9VSDLrxy1Q

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

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\class_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\.class\ = "class_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\class_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_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-1-5-21-3406023954-474543476-3319432036-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\class_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\.class	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\class_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000_CLASSES\class_auto_file\shell	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1368	AcroRd32.exe
1368	AcroRd32.exe
1368	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1984 wrote to memory of 1104	1984	cmd.exe	29
PID 1984 wrote to memory of 1104	1984	cmd.exe	29
PID 1984 wrote to memory of 1104	1984	cmd.exe	29
PID 1104 wrote to memory of 1368	1104	rundll32.exe	30
PID 1104 wrote to memory of 1368	1104	rundll32.exe	30
PID 1104 wrote to memory of 1368	1104	rundll32.exe	30
PID 1104 wrote to memory of 1368	1104	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\eteyvfyhrefyscymb\fqafapsmembgnmmyshty.class
1⤵
- Suspicious use of WriteProcessMemory
PID:1984
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\eteyvfyhrefyscymb\fqafapsmembgnmmyshty.class
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1104
- - 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\eteyvfyhrefyscymb\fqafapsmembgnmmyshty.class"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:1368

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

memory/1368-82-0x0000000076651000-0x0000000076653000-memory.dmp

Filesize
8KB

Download
memory/1984-54-0x000007FEFC241000-0x000007FEFC243000-memory.dmp

Filesize
8KB

Download