008ffbc9b349a2907a19016c574c90bd0b6dadadc626f3f76713874c366e4b01

Analysis

max time kernel
10s
max time network
118s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
25-01-2024 20:31

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General

Target

2024-01-25_ca236298ace89c87ec51e1ade444482a_cryptolocker.exe
Size

31KB
MD5

ca236298ace89c87ec51e1ade444482a
SHA1

0020b3f91dea9eeaa53dfd6448577a485c935893
SHA256

008ffbc9b349a2907a19016c574c90bd0b6dadadc626f3f76713874c366e4b01
SHA512

7de592ffdabe83f942aec5b3ba6f9281ec5c50db1d4db6e75e524f06bfb233ccfb1d0d9b3737cd4ceeaecdc0f75c03be1fbc3ab21c94c12a3023a63ef35752b8
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznUsDvt:b/yC4GyNM01GuQMNXw2PSjZl

Score

9^/10

discovery

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000015c71-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2012	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
2548	2024-01-25_ca236298ace89c87ec51e1ade444482a_cryptolocker.exe

Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046
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
2548	2024-01-25_ca236298ace89c87ec51e1ade444482a_cryptolocker.exe
2012	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2548 wrote to memory of 2012	2548	2024-01-25_ca236298ace89c87ec51e1ade444482a_cryptolocker.exe	28
PID 2548 wrote to memory of 2012	2548	2024-01-25_ca236298ace89c87ec51e1ade444482a_cryptolocker.exe	28
PID 2548 wrote to memory of 2012	2548	2024-01-25_ca236298ace89c87ec51e1ade444482a_cryptolocker.exe	28
PID 2548 wrote to memory of 2012	2548	2024-01-25_ca236298ace89c87ec51e1ade444482a_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-25_ca236298ace89c87ec51e1ade444482a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_ca236298ace89c87ec51e1ade444482a_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2548
- 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:2012

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

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
31KB

MD5
1ef78f56d980eabb638617b3b3865996

SHA1
28ba4bb32b233ac2d6396ee57af9d7669a2399bd

SHA256
0eec3871d6e57ec076b36c83c9e833cfa97d2413c477d6ca7e6388de774b86cf

SHA512
ad0b069f0192c550776ef3920589998b87a4975a121c59bcde61aa5d09c9497a7cc4066f5e5e135139531d7dd4aac061d6d262c4c6eab4eebf5758666018ee9b

Download Submit
memory/2548-0-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2548-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2548-3-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download