b025a2d3258c240146067c21275522efb33aa87a1aa6c08ef72ab3730f24d409

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
18/03/2024, 10:50

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General

Target

2024-03-18_d3fcaa0be72afd8ea62ef2e471bacc15_cryptolocker.exe
Size

69KB
MD5

d3fcaa0be72afd8ea62ef2e471bacc15
SHA1

2e3d40a85ada946b8bd3ca493e7a5b1d39126c3c
SHA256

b025a2d3258c240146067c21275522efb33aa87a1aa6c08ef72ab3730f24d409
SHA512

3ff6bf9a2acc680bcb3c6a455d072356b62371c677bf00f67916ab30d2cf8bf2d9decc6e3aff210cd05c9c5fca1bc23de85292e42f06563adcefb3db6b0b30ca
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUrg:DW60sllyWOtEvwDpjwF85+

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/1908-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0009000000014b70-11.dat	CryptoLocker_rule2
behavioral1/memory/2708-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1908-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/1908-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x0009000000014b70-11.dat	CryptoLocker_set1
behavioral1/memory/2708-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1908-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2708	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1908	2024-03-18_d3fcaa0be72afd8ea62ef2e471bacc15_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 1908 wrote to memory of 2708	1908	2024-03-18_d3fcaa0be72afd8ea62ef2e471bacc15_cryptolocker.exe	28
PID 1908 wrote to memory of 2708	1908	2024-03-18_d3fcaa0be72afd8ea62ef2e471bacc15_cryptolocker.exe	28
PID 1908 wrote to memory of 2708	1908	2024-03-18_d3fcaa0be72afd8ea62ef2e471bacc15_cryptolocker.exe	28
PID 1908 wrote to memory of 2708	1908	2024-03-18_d3fcaa0be72afd8ea62ef2e471bacc15_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-18_d3fcaa0be72afd8ea62ef2e471bacc15_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-18_d3fcaa0be72afd8ea62ef2e471bacc15_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1908
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2708

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
69KB

MD5
efd264cdd8d34fd0f58f3955726a4cc1

SHA1
fc8c41e80953d60836e57b9d45386d4d3e838c00

SHA256
a21e100bc98183783945777553ca06033925732e95c62005c93824640628a42b

SHA512
f0c862436e2113daa64cedbbbb029bb468c273f2fba8e5bae495aa843a6b77c840b6229621b4d749a4968f72a8ac29bb53bd083572e1039e78eec20d5ae70116

Download Submit
memory/1908-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1908-1-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/1908-2-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/1908-9-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/1908-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2708-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2708-19-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2708-18-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download