79a498a796d2f7a93434cd17ada2af8addb8e2f47f8616dd40bad2f71f5a7450

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
13/02/2024, 05:27

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General

Target

2024-02-13_1667ee4cd77cd908f7889919514688a1_cryptolocker.exe
Size

37KB
MD5

1667ee4cd77cd908f7889919514688a1
SHA1

0f65943b22b89fc00a9357e9c877860b3934925b
SHA256

79a498a796d2f7a93434cd17ada2af8addb8e2f47f8616dd40bad2f71f5a7450
SHA512

60ffe361be3433dc22de2d7ef121ea5d988e3c7bee00bfec6462560793db60d517d0c5bfc68961f40d829c01021f7de235f37ff24a713db3b98bb369a7a73329
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkLUAp:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkLt

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3184-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000f000000023124-13.dat	CryptoLocker_rule2
behavioral2/memory/3024-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3184-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3184-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000f000000023124-13.dat	CryptoLocker_set1
behavioral2/memory/3024-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3184-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-02-13_1667ee4cd77cd908f7889919514688a1_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3024	asih.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3184 wrote to memory of 3024	3184	2024-02-13_1667ee4cd77cd908f7889919514688a1_cryptolocker.exe	85
PID 3184 wrote to memory of 3024	3184	2024-02-13_1667ee4cd77cd908f7889919514688a1_cryptolocker.exe	85
PID 3184 wrote to memory of 3024	3184	2024-02-13_1667ee4cd77cd908f7889919514688a1_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-13_1667ee4cd77cd908f7889919514688a1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-13_1667ee4cd77cd908f7889919514688a1_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3184
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3024

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
37KB

MD5
c8d0dfd7793318f2f832c4e68a0103cc

SHA1
c497873425eb295accb898708173d4b5d58bf9e1

SHA256
13021eae4655b191fb75148beecbc36f757623141e1094b5a300fdaab260e0f7

SHA512
23f762e96a1c9fe39a401cd69c72c239ca10380dc5f31edf94d5bec0a456aac5c8f40ccac96a5ce75a2a6044af503dbd01fc077a7bcc8bfc8677a431db7bf4a5

Download Submit
memory/3024-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3024-20-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/3024-26-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/3184-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3184-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3184-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3184-3-0x0000000000710000-0x0000000000716000-memory.dmp

Filesize
24KB

Download
memory/3184-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download