c9193cfe9dcff83389d63bceeb62436a7b9e2910e43efb9cc6f4a74a5d7ea2af

Analysis

max time kernel
56s
max time network
132s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
10/01/2024, 05:55

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General

Target

2024-01-09_642cb2250d2c83eedf70d17532a29194_cryptolocker.exe
Size

33KB
MD5

642cb2250d2c83eedf70d17532a29194
SHA1

efac32a2a1bb011632161e6f94399ec62eff1d29
SHA256

c9193cfe9dcff83389d63bceeb62436a7b9e2910e43efb9cc6f4a74a5d7ea2af
SHA512

9fc6f07f1970aee66311ae94a2403eec88457533acce3fc50d65dd021ce24c6058844f8293bb26b632b287afbdd26e9621d4d94765e3cf4c48c773b01d326c6c
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznStEEr9VE/cog:b/yC4GyNM01GuQMNXw2PSjSKEBVE/c/

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2592	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
2652	2024-01-09_642cb2250d2c83eedf70d17532a29194_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
2652	2024-01-09_642cb2250d2c83eedf70d17532a29194_cryptolocker.exe
2592	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2652 wrote to memory of 2592	2652	2024-01-09_642cb2250d2c83eedf70d17532a29194_cryptolocker.exe	29
PID 2652 wrote to memory of 2592	2652	2024-01-09_642cb2250d2c83eedf70d17532a29194_cryptolocker.exe	29
PID 2652 wrote to memory of 2592	2652	2024-01-09_642cb2250d2c83eedf70d17532a29194_cryptolocker.exe	29
PID 2652 wrote to memory of 2592	2652	2024-01-09_642cb2250d2c83eedf70d17532a29194_cryptolocker.exe	29

C:\Users\Admin\AppData\Local\Temp\2024-01-09_642cb2250d2c83eedf70d17532a29194_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-09_642cb2250d2c83eedf70d17532a29194_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2652
- 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:2592

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
f12ea32a0df3bf812021b72e0dff24c1

SHA1
607728a54f3c1683781e1554f09fe0ceb78fd5ac

SHA256
abf153c94fdedd7859a0925f231946239ee0f3d40b08e7e04dfa25818895c723

SHA512
836242086d6033174ec0ea5b7fba60368f9f799dfb339cf9777d78b16ddd3da1df5109c9e61c58a56aeee7b669cfdf219ec644c3d1f246b97806c8e37870c875

Download Submit
memory/2592-16-0x00000000003D0000-0x00000000003D6000-memory.dmp

Filesize
24KB

Download
memory/2652-0-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/2652-1-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/2652-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download