c8dd9bcdf2185f902c07baaf81108092e51c92da0a5440e1a1e3293cd52ef521

Analysis

max time kernel
148s
max time network
152s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
23/02/2024, 22:26

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General

Target

2024-02-23_641d6444ce9877035b2e03827cf7a72c_cryptolocker.exe
Size

31KB
MD5

641d6444ce9877035b2e03827cf7a72c
SHA1

fb3a612335947e3b4982ff5dbcf8f3fa81fb7749
SHA256

c8dd9bcdf2185f902c07baaf81108092e51c92da0a5440e1a1e3293cd52ef521
SHA512

4367f1bae32166c560a59da55b0cf4241eb2b0625ff28283817ebda7b243e560293ce33b5301cd3aa16b16e423a630638b6e4125289bf5df5910d1df50decd00
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9RXmw:b7o/2n1TCraU6GD1a4Xt9Rt

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012248-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
3048	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
2056	2024-02-23_641d6444ce9877035b2e03827cf7a72c_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
2056	2024-02-23_641d6444ce9877035b2e03827cf7a72c_cryptolocker.exe
3048	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2056 wrote to memory of 3048	2056	2024-02-23_641d6444ce9877035b2e03827cf7a72c_cryptolocker.exe	28
PID 2056 wrote to memory of 3048	2056	2024-02-23_641d6444ce9877035b2e03827cf7a72c_cryptolocker.exe	28
PID 2056 wrote to memory of 3048	2056	2024-02-23_641d6444ce9877035b2e03827cf7a72c_cryptolocker.exe	28
PID 2056 wrote to memory of 3048	2056	2024-02-23_641d6444ce9877035b2e03827cf7a72c_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-23_641d6444ce9877035b2e03827cf7a72c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_641d6444ce9877035b2e03827cf7a72c_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2056
- 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:3048

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
f4a5d76840b6c299aac368eaee047c9b

SHA1
e9469750ea8a5f57ab6aa92b1b786a5a01f404fa

SHA256
703b9f76cbd48fd40c8a63e9a4f96c4d520731b6518108de7e5636d764a79f8b

SHA512
baaa7681644bde61c4aa4b7504d858871c92f6530369438364e6af7d09b3e4a54cea842aee53c2a86fad4a6ea33118850dbe0a6ef5a54b8b7361975ba845022f

Download Submit
memory/2056-0-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/2056-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2056-2-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/3048-17-0x00000000001F0000-0x00000000001F6000-memory.dmp

Filesize
24KB

Download