7ccb4a45effeaec94b7ef1094c4768256f960778028577fbfb18307d81df838a

Analysis

max time kernel
150s
max time network
154s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
02/02/2024, 10:29

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General

Target

2024-02-02_57f18cc631ff804f9029cd82eb635d62_cryptolocker.exe
Size

44KB
MD5

57f18cc631ff804f9029cd82eb635d62
SHA1

0cc1e2aec05eb8251827a41570cf80c55b958257
SHA256

7ccb4a45effeaec94b7ef1094c4768256f960778028577fbfb18307d81df838a
SHA512

55dc0b44722af81d0dd7d581c654f0ccc042aadad66bab07c62f986aeaf3c87d5965dcf8e659ac8220e9dd950f21753101cf0b8eca2ed4a34287d4c041b3999d
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6j4AYsqSh+DETkedm+My1j1:YGzl5wjRQBBOsP1QMOtEvwDpjl39+D+H

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2236-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000012243-11.dat	CryptoLocker_rule2
behavioral1/memory/2236-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1168-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2236-14-0x0000000002800000-0x000000000280B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2236-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c000000012243-11.dat	CryptoLocker_set1
behavioral1/memory/2236-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1168-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2236-14-0x0000000002800000-0x000000000280B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1168	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2236	2024-02-02_57f18cc631ff804f9029cd82eb635d62_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 2236 wrote to memory of 1168	2236	2024-02-02_57f18cc631ff804f9029cd82eb635d62_cryptolocker.exe	28
PID 2236 wrote to memory of 1168	2236	2024-02-02_57f18cc631ff804f9029cd82eb635d62_cryptolocker.exe	28
PID 2236 wrote to memory of 1168	2236	2024-02-02_57f18cc631ff804f9029cd82eb635d62_cryptolocker.exe	28
PID 2236 wrote to memory of 1168	2236	2024-02-02_57f18cc631ff804f9029cd82eb635d62_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-02_57f18cc631ff804f9029cd82eb635d62_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-02_57f18cc631ff804f9029cd82eb635d62_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2236
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1168

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
44KB

MD5
ed4acd1efd4e0fe1727b9ba09a089678

SHA1
b5d71ebc5b727f84b9b15ebf40db8ae0c97b4c43

SHA256
26616dbf8612e82fec5b28711a47683784c1a537d8219d543d73998e130196e7

SHA512
5ec59957d62e7dd24aebc4f5934a143d895648114ba832d7dfed0bb118afa0b79a63afb268e72ef87a895e60e6f736c76ec0699524960130377d6c0e3fd7c6a4

Download Submit
memory/1168-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1168-19-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/1168-20-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2236-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2236-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2236-2-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/2236-4-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2236-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2236-14-0x0000000002800000-0x000000000280B000-memory.dmp

Filesize
44KB

Download