4691e2f6a5377e12ca13f32bfcbfa1f17f3ed6aacb1f703ab8783b72535cf6e6

Analysis

max time kernel
149s
max time network
155s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
19/02/2024, 16:30

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General

Target

2024-02-19_3f06773b5f7e43cd6337dcd77169ab24_cryptolocker.exe
Size

41KB
MD5

3f06773b5f7e43cd6337dcd77169ab24
SHA1

da7d9d08c339812f9ca67a9fc80bf485fcd87abe
SHA256

4691e2f6a5377e12ca13f32bfcbfa1f17f3ed6aacb1f703ab8783b72535cf6e6
SHA512

80bf8bd15230f80814adbdf6a88280a0bf261b6d11bfb4dc4779b02678bf11c40a52ca69cedd45736935c9d6b92204cf0a44461688c3a3e8cf49326314b6b693
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMph0d:bc/y2lkF0+BeM

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
1640	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
2348	2024-02-19_3f06773b5f7e43cd6337dcd77169ab24_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
2348	2024-02-19_3f06773b5f7e43cd6337dcd77169ab24_cryptolocker.exe
1640	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2348 wrote to memory of 1640	2348	2024-02-19_3f06773b5f7e43cd6337dcd77169ab24_cryptolocker.exe	28
PID 2348 wrote to memory of 1640	2348	2024-02-19_3f06773b5f7e43cd6337dcd77169ab24_cryptolocker.exe	28
PID 2348 wrote to memory of 1640	2348	2024-02-19_3f06773b5f7e43cd6337dcd77169ab24_cryptolocker.exe	28
PID 2348 wrote to memory of 1640	2348	2024-02-19_3f06773b5f7e43cd6337dcd77169ab24_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-19_3f06773b5f7e43cd6337dcd77169ab24_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_3f06773b5f7e43cd6337dcd77169ab24_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2348
- 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:1640

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
41KB

MD5
35bf3d3353997abd5ff419cda19a69d6

SHA1
e1fdb10403780ce8e3b9bb8ce17171ec0ac85742

SHA256
446779b74ff00d46479406081f3875a2e85a26a8efd89d44583a0fb4d55593a5

SHA512
04d5a5b7ab1871a5294ab701ded77f302389743cda82d9c375fb7dbe0da7e1570cc027d62a883e49b47456916878e8a59088fc83fd330076082199519e8e6113

Download Submit
memory/1640-17-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/2348-0-0x00000000002E0000-0x00000000002E6000-memory.dmp

Filesize
24KB

Download
memory/2348-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2348-2-0x00000000002E0000-0x00000000002E6000-memory.dmp

Filesize
24KB

Download