efcc4fb5d3e310787bc01b06e35a351a6ce6fde26ad068f09848d6e49a10626e

Analysis

max time kernel
134s
max time network
145s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
19/02/2024, 21:46

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General

Target

2024-02-19_9df13ae6f1b571cb91a3cdd3895e1d5c_cryptolocker.exe
Size

33KB
MD5

9df13ae6f1b571cb91a3cdd3895e1d5c
SHA1

a76f2b368dc5b5eefbe70935c11625d0448486ac
SHA256

efcc4fb5d3e310787bc01b06e35a351a6ce6fde26ad068f09848d6e49a10626e
SHA512

51be5943548b72cb96c39144721d089f3e4a68e1d791b1338fb31b5eec06b1e75c1d3607f70d92aafea761dba2d5f42cca165d7ee42fb3f7a6f0148c816a4920
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/B1RwFtzxt1Y:b7o/2n1TCraU6GD1a4Xt9bRwrbG

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000012243-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2064	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
1180	2024-02-19_9df13ae6f1b571cb91a3cdd3895e1d5c_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
1180	2024-02-19_9df13ae6f1b571cb91a3cdd3895e1d5c_cryptolocker.exe
2064	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1180 wrote to memory of 2064	1180	2024-02-19_9df13ae6f1b571cb91a3cdd3895e1d5c_cryptolocker.exe	28
PID 1180 wrote to memory of 2064	1180	2024-02-19_9df13ae6f1b571cb91a3cdd3895e1d5c_cryptolocker.exe	28
PID 1180 wrote to memory of 2064	1180	2024-02-19_9df13ae6f1b571cb91a3cdd3895e1d5c_cryptolocker.exe	28
PID 1180 wrote to memory of 2064	1180	2024-02-19_9df13ae6f1b571cb91a3cdd3895e1d5c_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-19_9df13ae6f1b571cb91a3cdd3895e1d5c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_9df13ae6f1b571cb91a3cdd3895e1d5c_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1180
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2064

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\rewok.exe

Filesize
33KB

MD5
4911648d26da6f2594dbca8e00e1bdd4

SHA1
565ceace133ac148bb05c52ef9aadbf1886cb6e9

SHA256
46ea6e3829a548324cdd41a5c1fbe5e695b9ac34b1fa9604f9c272221b91c688

SHA512
4d1770fe01730f0e11cdcdf80243bd6a5f26bdffb7e15e097181abe19abca98a45c38b2f483a7afb07b44728decbffc9f855b8f3c1105a7523225a398035f159

Download Submit
memory/1180-0-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/1180-1-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/1180-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download