a8f53fe4a6015f5225c4245a53873ef36d378287d8dfae8abe978d8e7712c381

Analysis

max time kernel
147s
max time network
149s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
09/04/2024, 01:34

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General

Target

2024-04-09_4839cfbf902c0cc90d046fce3189db70_cryptolocker.exe
Size

57KB
MD5

4839cfbf902c0cc90d046fce3189db70
SHA1

ec3aa68a2ef129a3d6273175e5814f1105967b93
SHA256

a8f53fe4a6015f5225c4245a53873ef36d378287d8dfae8abe978d8e7712c381
SHA512

cd9920be47148a11fe027c21008fd74b3a2d35b05ef6a0a8ee05ded9119b9e5310c0d60d3d21d33e2d713e55fa1bd1f57eda024eed198ca43069b478f8e37eb9
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBccD2RuoNmuBLlH9xe:X6a+SOtEvwDpjBrO+

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000012251-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000012251-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1356	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2856	2024-04-09_4839cfbf902c0cc90d046fce3189db70_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2856 wrote to memory of 1356	2856	2024-04-09_4839cfbf902c0cc90d046fce3189db70_cryptolocker.exe	28
PID 2856 wrote to memory of 1356	2856	2024-04-09_4839cfbf902c0cc90d046fce3189db70_cryptolocker.exe	28
PID 2856 wrote to memory of 1356	2856	2024-04-09_4839cfbf902c0cc90d046fce3189db70_cryptolocker.exe	28
PID 2856 wrote to memory of 1356	2856	2024-04-09_4839cfbf902c0cc90d046fce3189db70_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-09_4839cfbf902c0cc90d046fce3189db70_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-09_4839cfbf902c0cc90d046fce3189db70_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2856
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1356

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\asih.exe

Filesize
57KB

MD5
72be5e6b950463c8734064be6f457cd0

SHA1
fea8dec3e549e8e52733295a17aaf3d58ea8d3f5

SHA256
56221faf8ca62ab5c323104266b76ae7c20d15fdd359a8f1cafb7f43f7450730

SHA512
0d9c72cb9e442e8c1462e7993cedc9d37523718524d188cf47ad4510a40b11f2cec9dbb3479a93b184cc28508c05f3acbc9911b9f788db4cb57a76bcf8ba3f7f

Download Submit
memory/1356-15-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/1356-17-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2856-0-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2856-1-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2856-8-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download