f1d71ed3a4b3100da1999362097ccdc0e4d92edc10d16da0036a0be8d351f048

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
27-01-2024 04:23

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General

Target

2024-01-27_10e1e877bd3f9ed55fe155332e96f74e_cryptolocker.exe
Size

31KB
MD5

10e1e877bd3f9ed55fe155332e96f74e
SHA1

f9a1302092b69334a6a4fcfa1ee048136f28224c
SHA256

f1d71ed3a4b3100da1999362097ccdc0e4d92edc10d16da0036a0be8d351f048
SHA512

be32be405239af2ccdff9e2e2bcb0d7e9a4320da325a2998951fa417e6ea658c321013cf9d0faba246292eb0fcbed2c869edd85046c152919b2882f3514f9398
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/Bj:b7o/2n1TCraU6GD1a4Xt9N

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c0000000122c4-13.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
3028	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
2980	2024-01-27_10e1e877bd3f9ed55fe155332e96f74e_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
2980	2024-01-27_10e1e877bd3f9ed55fe155332e96f74e_cryptolocker.exe
3028	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2980 wrote to memory of 3028	2980	2024-01-27_10e1e877bd3f9ed55fe155332e96f74e_cryptolocker.exe	17
PID 2980 wrote to memory of 3028	2980	2024-01-27_10e1e877bd3f9ed55fe155332e96f74e_cryptolocker.exe	17
PID 2980 wrote to memory of 3028	2980	2024-01-27_10e1e877bd3f9ed55fe155332e96f74e_cryptolocker.exe	17
PID 2980 wrote to memory of 3028	2980	2024-01-27_10e1e877bd3f9ed55fe155332e96f74e_cryptolocker.exe	17

C:\Users\Admin\AppData\Local\Temp\2024-01-27_10e1e877bd3f9ed55fe155332e96f74e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-27_10e1e877bd3f9ed55fe155332e96f74e_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2980
- 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:3028

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\rewok.exe

Filesize
31KB

MD5
77ecf109c7b3c45dbee1347c548e95ac

SHA1
980625f8be96f66d7942e3b606bd70ea18ec5164

SHA256
1e98c7aa4bf31897703af139ca4230a2810d0ab7529fa0d1575d6e771f25ebdc

SHA512
1efb69a8d4175c06f796bf5c54f46741eb9001b224446b2419e18676796e0811bc025f6e873a46cf35ff74d05b4539528c5f4fd609f72e9d621026b4b2c2a1f8

Download Submit
memory/2980-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2980-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2980-0-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/3028-18-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download