85b1902df70fb5ac009e60526fbc615cd64fcacaab9ac18ba31ec41e8fbcfb70

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
19-02-2024 22:41

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General

Target

2024-02-19_7be6f6c2fe873357290bd093628c8fa1_cryptolocker.exe
Size

33KB
MD5

7be6f6c2fe873357290bd093628c8fa1
SHA1

024df3e69229d278f51b56337601bab75b29f10e
SHA256

85b1902df70fb5ac009e60526fbc615cd64fcacaab9ac18ba31ec41e8fbcfb70
SHA512

f7d2d8e8e07240e30fb9db2a025432722911b2d8a9e2fbe7ef4e31cdbbbd3033d3d7b1bd64e572d308828c9e9ff9b7cea1782febac08e3140a842b5273bde91a
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/B1RU3qKO:b7o/2n1TCraU6GD1a4Xt9bRU6z

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012274-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2648	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
2152	2024-02-19_7be6f6c2fe873357290bd093628c8fa1_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
2152	2024-02-19_7be6f6c2fe873357290bd093628c8fa1_cryptolocker.exe
2648	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2152 wrote to memory of 2648	2152	2024-02-19_7be6f6c2fe873357290bd093628c8fa1_cryptolocker.exe	28
PID 2152 wrote to memory of 2648	2152	2024-02-19_7be6f6c2fe873357290bd093628c8fa1_cryptolocker.exe	28
PID 2152 wrote to memory of 2648	2152	2024-02-19_7be6f6c2fe873357290bd093628c8fa1_cryptolocker.exe	28
PID 2152 wrote to memory of 2648	2152	2024-02-19_7be6f6c2fe873357290bd093628c8fa1_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-19_7be6f6c2fe873357290bd093628c8fa1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_7be6f6c2fe873357290bd093628c8fa1_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2152
- 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:2648

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
99bb5a378e1a426db5a369d15bb956a7

SHA1
fc76fdb1b30dba40d23b148af4a214495a516232

SHA256
4febede36a0f0091b957830e94ca35ed94ed263a8bfd8473c1fe1781bd87dc73

SHA512
9bdff514684f77b0496a61783e95817fd7969fc2bbf73e323bfaf7cbb0a5d7e55cdb9c2b15f9ac5034fbb7debc34efa7b6a7eb84101a2f8cbc1eb1f9f8665408

Download Submit
memory/2152-0-0x00000000001F0000-0x00000000001F6000-memory.dmp

Filesize
24KB

Download
memory/2152-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2152-1-0x00000000001F0000-0x00000000001F6000-memory.dmp

Filesize
24KB

Download
memory/2648-21-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download