f25d40e1767be77e4145cb59c1e45634c7e8c81d641c53a975f2635e63245934

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
28-02-2024 22:29

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General

Target

2024-02-28_b056add30610287691460e958096422e_cryptolocker.exe
Size

46KB
MD5

b056add30610287691460e958096422e
SHA1

efe351130ebe79c8eb4c081b8588e5e4499339a1
SHA256

f25d40e1767be77e4145cb59c1e45634c7e8c81d641c53a975f2635e63245934
SHA512

422ddcad4e0205fe5511118d40aa12c047d827867e189cb174a76fe2409480e78d2eba398e79ce3426edf28472265c0d614bee4f7dc44c736857e26ca93bc322
SSDEEP

768:btB9g/WItCSsAGjX7r3BPOMHoc/QQJP5q4X:btB9g/xtCSKfxLIc/C4X

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a0000000143fa-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2944	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
1040	2024-02-28_b056add30610287691460e958096422e_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
1040	2024-02-28_b056add30610287691460e958096422e_cryptolocker.exe
2944	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1040 wrote to memory of 2944	1040	2024-02-28_b056add30610287691460e958096422e_cryptolocker.exe	28
PID 1040 wrote to memory of 2944	1040	2024-02-28_b056add30610287691460e958096422e_cryptolocker.exe	28
PID 1040 wrote to memory of 2944	1040	2024-02-28_b056add30610287691460e958096422e_cryptolocker.exe	28
PID 1040 wrote to memory of 2944	1040	2024-02-28_b056add30610287691460e958096422e_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-28_b056add30610287691460e958096422e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_b056add30610287691460e958096422e_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1040
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2944

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\gewos.exe

Filesize
46KB

MD5
72e9c75a76f42a8be3476094b2e50760

SHA1
cca413d6157f71d9fec6a07046e0b6c9217452d2

SHA256
5c0e3e79e6ac56913ccdb7e62dada19914e2c1af67edb4ab625f48f397a48c0e

SHA512
c3bded32c88da5613dc04832aa3378306c3955d647602d7e5b3b761bf9322c73387cc1a9958d6baf55829fd5e1128ea85654fa13a811f3c290b683b3d2433231

Download Submit
memory/1040-0-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/1040-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1040-4-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2944-18-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download