3bd5b28160eb1684561930c023d5b3b2893cd828ce9411df09e2921f67530e52

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
25/06/2024, 20:18

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General

Target

3bd5b28160eb1684561930c023d5b3b2893cd828ce9411df09e2921f67530e52.exe
Size

43KB
MD5

46655e35b9dc79e96ae4203779575e8b
SHA1

c0ba6ba63849543da7fb5cfd90dc3843e00871ff
SHA256

3bd5b28160eb1684561930c023d5b3b2893cd828ce9411df09e2921f67530e52
SHA512

bab21612aaf8b89609b2a40a4c1a54e5af0c8927d48f9bb674014564eb6a3ef27e84031a73611ebea77e23f25359670edc5347b88e419bf10f3b3a50a8be788f
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkL7vF1Tw:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkLw

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2464-1-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0006000000023298-13.dat	CryptoLocker_rule2
behavioral2/memory/4852-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2464-19-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/2464-1-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0006000000023298-13.dat	CryptoLocker_set1
behavioral2/memory/4852-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2464-19-0x0000000000500000-0x000000000050B000-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-1-5-21-2447855248-390457009-3660902674-1000\Control Panel\International\Geo\Nation	3bd5b28160eb1684561930c023d5b3b2893cd828ce9411df09e2921f67530e52.exe

Executes dropped EXE 1 IoCs

pid	Process
4852	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 2464 wrote to memory of 4852	2464	3bd5b28160eb1684561930c023d5b3b2893cd828ce9411df09e2921f67530e52.exe	82
PID 2464 wrote to memory of 4852	2464	3bd5b28160eb1684561930c023d5b3b2893cd828ce9411df09e2921f67530e52.exe	82
PID 2464 wrote to memory of 4852	2464	3bd5b28160eb1684561930c023d5b3b2893cd828ce9411df09e2921f67530e52.exe	82

C:\Users\Admin\AppData\Local\Temp\3bd5b28160eb1684561930c023d5b3b2893cd828ce9411df09e2921f67530e52.exe
"C:\Users\Admin\AppData\Local\Temp\3bd5b28160eb1684561930c023d5b3b2893cd828ce9411df09e2921f67530e52.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2464
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4852

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
44KB

MD5
8f587011d167c757c3a0498667e4b095

SHA1
cea85951c23e96977a1a87b871d27243364f6747

SHA256
fd35eb8b9fffec204ec84fe59f4c905b752e76df15401cbb3a518a257ebaccc9

SHA512
d238c79db2efe03053bc499d6063aecc9abe471957417a61d3fe4d9502db22230c5fead8c8a6ae8f22c86f14c0e717c7dbe05d4941fe702d4356b875505151ff

Download Submit
memory/2464-0-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/2464-1-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2464-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/2464-9-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/2464-19-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4852-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4852-20-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/4852-26-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download