ba8a3b3b4f89f221dd4276f22140925ffe0f0bdcba33e9c198d8f28db76efee2

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
12-02-2024 14:48

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General

Target

2024-02-12_dff6b09dfcf7518d734ca08e02acf05e_cryptolocker.exe
Size

69KB
MD5

dff6b09dfcf7518d734ca08e02acf05e
SHA1

ca80d0dafc4f178d57162d0d5c776a08232c9169
SHA256

ba8a3b3b4f89f221dd4276f22140925ffe0f0bdcba33e9c198d8f28db76efee2
SHA512

3e1f8a7b1410c5b3d30926590f0a20d749194dbf229db9290754403144de120a93023784b4156da9e8d96bf2e8ee7aba5512b09b2369f7aceb24c0f773a32c33
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUl:DW60sllyWOtEvwDpjwF85r

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/1628-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0009000000012257-11.dat	CryptoLocker_rule2
behavioral1/memory/1628-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2376-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/1628-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x0009000000012257-11.dat	CryptoLocker_set1
behavioral1/memory/1628-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2376-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2376	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1628	2024-02-12_dff6b09dfcf7518d734ca08e02acf05e_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 1628 wrote to memory of 2376	1628	2024-02-12_dff6b09dfcf7518d734ca08e02acf05e_cryptolocker.exe	28
PID 1628 wrote to memory of 2376	1628	2024-02-12_dff6b09dfcf7518d734ca08e02acf05e_cryptolocker.exe	28
PID 1628 wrote to memory of 2376	1628	2024-02-12_dff6b09dfcf7518d734ca08e02acf05e_cryptolocker.exe	28
PID 1628 wrote to memory of 2376	1628	2024-02-12_dff6b09dfcf7518d734ca08e02acf05e_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-12_dff6b09dfcf7518d734ca08e02acf05e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_dff6b09dfcf7518d734ca08e02acf05e_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1628
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2376

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
1927a2e4e1228bcae4bf4095af95907e

SHA1
3fcfc4331d426df9dac9c920cb079bd1f0906940

SHA256
b589c2d66fb9d525907d99a05d7d5a594818e0647ca5d4a3ebbee42d6bd62952

SHA512
3d9e29d537293e075a7238e4abb76239e4808aa48ce89cafb570c70ad105d99fa28def315f79c489154907c68a03bd7371b7bca45af82b213b89e7b4fe822d7e

Download Submit
memory/1628-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1628-1-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/1628-3-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/1628-2-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/1628-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2376-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2376-18-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download