21d5c7b133312b75038eabf2a30b31042703aece20901eb9982b1240448a4a4c

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
20/02/2024, 11:23

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General

Target

2024-02-20_108178046816aec24c4a44cef51a1b59_cryptolocker.exe
Size

31KB
MD5

108178046816aec24c4a44cef51a1b59
SHA1

51687e7fb87917faad1e5491886c5aaa52c277ad
SHA256

21d5c7b133312b75038eabf2a30b31042703aece20901eb9982b1240448a4a4c
SHA512

2f80bd1acc4a9bc48d7d4408966e254529b1569a9aa52d8c5a497d97d21d75a2851fe1f2518ecdb817cbc0a47f65c05da9c640886389ba2106b1bdefbcf3a043
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9RDE1X:b7o/2n1TCraU6GD1a4Xt9RQ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000012261-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2216	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
2192	2024-02-20_108178046816aec24c4a44cef51a1b59_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
2192	2024-02-20_108178046816aec24c4a44cef51a1b59_cryptolocker.exe
2216	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2192 wrote to memory of 2216	2192	2024-02-20_108178046816aec24c4a44cef51a1b59_cryptolocker.exe	28
PID 2192 wrote to memory of 2216	2192	2024-02-20_108178046816aec24c4a44cef51a1b59_cryptolocker.exe	28
PID 2192 wrote to memory of 2216	2192	2024-02-20_108178046816aec24c4a44cef51a1b59_cryptolocker.exe	28
PID 2192 wrote to memory of 2216	2192	2024-02-20_108178046816aec24c4a44cef51a1b59_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-20_108178046816aec24c4a44cef51a1b59_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-20_108178046816aec24c4a44cef51a1b59_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2192
- 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:2216

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
31KB

MD5
332aa26055a2a8897699a1d0d893235b

SHA1
cfd747f3f84dcdf9d43faad7721e526b7cbe8a1b

SHA256
f8dd440c2cef6e806e83f679fb22b2301fa055dddf6c27575a586416e42135e3

SHA512
c3b8fb8d4ce910add7291e16578264dc411c4d5453e6fc5947ac86d2cc42259892fc53cbb5f6f0e4ee1579615de494be2a553f7dda85afee5f6907a59769e1f0

Download Submit
memory/2192-0-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/2192-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2192-2-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/2216-17-0x00000000003A0000-0x00000000003A6000-memory.dmp

Filesize
24KB

Download