558834638d21acf3c1aa70ff869eec4d594162f047e484ceb91fa48682264fdc

Analysis

max time kernel
121s
max time network
124s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
20/02/2024, 05:17

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General

Target

2024-02-20_edf2751c92fdb5e17a7e05001382dedc_cryptolocker.exe
Size

36KB
MD5

edf2751c92fdb5e17a7e05001382dedc
SHA1

d2d8c7a59ab0ccb82074af123ba60070c5a0503f
SHA256

558834638d21acf3c1aa70ff869eec4d594162f047e484ceb91fa48682264fdc
SHA512

782df8f2a839dc580a5ac43a5d68a53643f7cac2c5cf4f3ba084feccfc7e822d4c3332b6481567f9b15d9f977a137d758701ae175bbda2c14e3d62cd7eb3fb2b
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunKU8:btB9g/WItCSsAGjX7e9N0hunKU8

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012252-12.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1656	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
2416	2024-02-20_edf2751c92fdb5e17a7e05001382dedc_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
2416	2024-02-20_edf2751c92fdb5e17a7e05001382dedc_cryptolocker.exe
1656	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2416 wrote to memory of 1656	2416	2024-02-20_edf2751c92fdb5e17a7e05001382dedc_cryptolocker.exe	28
PID 2416 wrote to memory of 1656	2416	2024-02-20_edf2751c92fdb5e17a7e05001382dedc_cryptolocker.exe	28
PID 2416 wrote to memory of 1656	2416	2024-02-20_edf2751c92fdb5e17a7e05001382dedc_cryptolocker.exe	28
PID 2416 wrote to memory of 1656	2416	2024-02-20_edf2751c92fdb5e17a7e05001382dedc_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-20_edf2751c92fdb5e17a7e05001382dedc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-20_edf2751c92fdb5e17a7e05001382dedc_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2416
- 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:1656

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

C:\Users\Admin\AppData\Local\Temp\gewos.exe

Filesize
36KB

MD5
d7dede30feef27b09ae2aa6d1ef9c8ad

SHA1
998ee68926e474712c9d091e96eb5ffb17b2ef0f

SHA256
0d365fdff9028f00eb7121c28802c919c7185c1a3f9cc602a367436ef2ece601

SHA512
d0bb823e5ea81c1cb97565c056838dc6c3a6d4e2e14885c8737be40ae691ee3caf22d4cbf2f2dc1f826a392de8d0b76be0cf4fd076d28e29a1d245f0846b5d02

Download Submit
memory/1656-19-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/2416-0-0x00000000001F0000-0x00000000001F6000-memory.dmp

Filesize
24KB

Download
memory/2416-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2416-8-0x00000000001F0000-0x00000000001F6000-memory.dmp

Filesize
24KB

Download