79717523a95d69670c22bc986b64de17dcdc0dca3a8a807d33fa38f51b8bc6d4

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
10-05-2024 15:37

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General

Target

2024-05-10_b05bfd2496c195e1ae72d42a2ca68972_cryptolocker.exe
Size

41KB
MD5

b05bfd2496c195e1ae72d42a2ca68972
SHA1

39c4257e72080fa0cf035842f7de851bdd652da8
SHA256

79717523a95d69670c22bc986b64de17dcdc0dca3a8a807d33fa38f51b8bc6d4
SHA512

e38e6c10b68a2e35d9507dce90cbdb560753118a06270bf9adb89a8fef966b93463a7e26ad1480017d551b7a30c88b74cf31ae0d0e6b3751fb5888a7aa8287d4
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HK/wSvuQTCz:X6QFElP6n+gJQMOtEvwDpjBsYK/fA

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000013413-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000013413-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2840	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1940	2024-05-10_b05bfd2496c195e1ae72d42a2ca68972_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 1940 wrote to memory of 2840	1940	2024-05-10_b05bfd2496c195e1ae72d42a2ca68972_cryptolocker.exe	28
PID 1940 wrote to memory of 2840	1940	2024-05-10_b05bfd2496c195e1ae72d42a2ca68972_cryptolocker.exe	28
PID 1940 wrote to memory of 2840	1940	2024-05-10_b05bfd2496c195e1ae72d42a2ca68972_cryptolocker.exe	28
PID 1940 wrote to memory of 2840	1940	2024-05-10_b05bfd2496c195e1ae72d42a2ca68972_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-10_b05bfd2496c195e1ae72d42a2ca68972_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-10_b05bfd2496c195e1ae72d42a2ca68972_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1940
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2840

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
41KB

MD5
eb7eda606161f01fc72627cdae969d8a

SHA1
fb28879910456c2085697826a1564bb7a8a81a3e

SHA256
bb951393e95308e8374256fba354a4723a457ad450faec4376f098a84138aeb5

SHA512
930f900e5b0cd5cbb5c705328ab5d190e0946785a5e31d40490eb6c29890c2839cb7e9128caabbd894d5be51d535f2a113fb551f16f50d46bb73a7e0cc171078

Download Submit
memory/1940-1-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/1940-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1940-8-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2840-15-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download