a138f97df51916083b0537cbf5f38edcb71d2a7d5bc78c861fab671779240347

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
23-02-2024 08:47

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General

Target

2024-02-23_f628f609479bd993f732fd8b2df2922f_cryptolocker.exe
Size

34KB
MD5

f628f609479bd993f732fd8b2df2922f
SHA1

4b0e452de6224f6267e2e503bb9fcde0d9c095bd
SHA256

a138f97df51916083b0537cbf5f38edcb71d2a7d5bc78c861fab671779240347
SHA512

b5349dccd07e60eb7bc017fab130b2c89dc7df9a9f5941e2494a47a4c95e83fc29d2c96466651fce96576a1aaf9b81b32c6fde9becb54cb7a662c033c23e7361
SSDEEP

384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUgIunexRlSrxVM:bA74zYcgT/Ekd0ryfjPIunYwK

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000012339-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1376	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
2292	2024-02-23_f628f609479bd993f732fd8b2df2922f_cryptolocker.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2292 wrote to memory of 1376	2292	2024-02-23_f628f609479bd993f732fd8b2df2922f_cryptolocker.exe	28
PID 2292 wrote to memory of 1376	2292	2024-02-23_f628f609479bd993f732fd8b2df2922f_cryptolocker.exe	28
PID 2292 wrote to memory of 1376	2292	2024-02-23_f628f609479bd993f732fd8b2df2922f_cryptolocker.exe	28
PID 2292 wrote to memory of 1376	2292	2024-02-23_f628f609479bd993f732fd8b2df2922f_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-23_f628f609479bd993f732fd8b2df2922f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_f628f609479bd993f732fd8b2df2922f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2292
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1376

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\hasfj.exe

Filesize
34KB

MD5
5bd6af2e12bf03942af95691ceaa4016

SHA1
611f2e2dd15120afcba2aba36d9f1a2fee43d471

SHA256
20623347e7ea57f241445fdfb31ce5d8223140d7c783077237d72ae677b2f572

SHA512
3c3db06caa18d9324c42d325c5231ec17488b12d1a6a84192755d9f3310ccb98d26702abecd229f55876fd05d9d5f38acbdb677e8b1f357d006a36cb8c0732c0

Download Submit
memory/1376-15-0x0000000001CF0000-0x0000000001CF6000-memory.dmp

Filesize
24KB

Download
memory/1376-22-0x0000000000570000-0x0000000000576000-memory.dmp

Filesize
24KB

Download
memory/2292-0-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/2292-2-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2292-1-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download