0b11338133dd0bc30c0321fd23c1b14ee0be1a3545c9ee34f4cb0d4e5b630823

Analysis

max time kernel
119s
max time network
119s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
03/06/2024, 04:31

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General

Target

2024-06-03_7343af327b69b44eac48611953408882_cryptolocker.exe
Size

34KB
MD5

7343af327b69b44eac48611953408882
SHA1

7e97b0d724f573338fef7b7f118f8e2bde56b10a
SHA256

0b11338133dd0bc30c0321fd23c1b14ee0be1a3545c9ee34f4cb0d4e5b630823
SHA512

7a31bdc021f1a0e50a7b5a17a8a30a8e64b6a24d73d545bbb0f6a59be28b75790655cb3835a4995d0c539e48ec9cbd76f1dc2a62cb46e2c49c1d79050da14297
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznStEkcsguM:b/yC4GyNM01GuQMNXw2PSjSKkcJn

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000013143-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2096	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
2868	2024-06-03_7343af327b69b44eac48611953408882_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2868	2024-06-03_7343af327b69b44eac48611953408882_cryptolocker.exe
2096	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2868 wrote to memory of 2096	2868	2024-06-03_7343af327b69b44eac48611953408882_cryptolocker.exe	28
PID 2868 wrote to memory of 2096	2868	2024-06-03_7343af327b69b44eac48611953408882_cryptolocker.exe	28
PID 2868 wrote to memory of 2096	2868	2024-06-03_7343af327b69b44eac48611953408882_cryptolocker.exe	28
PID 2868 wrote to memory of 2096	2868	2024-06-03_7343af327b69b44eac48611953408882_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-03_7343af327b69b44eac48611953408882_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-03_7343af327b69b44eac48611953408882_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2868
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2096

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

\Users\Admin\AppData\Local\Temp\retln.exe

Filesize
34KB

MD5
b7ae3c7e300b1a03a4c7bf45ed901d8f

SHA1
a6ffcb2ff9f747f3abf0e6f27375e012a7a57d3c

SHA256
91e3b05e06337877dd0c0832a1589b713478a7b26ef1b48b09c055b01be4cafd

SHA512
3afee6921ec6746d7cf59355552df75b1edaf92627202f7eac02354a9075e2aa57c0a29ba00beafa57980c7059a6a5f911269c5df1cde57a9cc55df741c07805

Download Submit
memory/2096-23-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download
memory/2868-8-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2868-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2868-0-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download