e04905389c5f4ebfacb3c7ba1d3f2dc142ecbd75db224e824a5a8139c3b15c10

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
05/04/2024, 04:39

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General

Target

2024-04-05_f774f400c5e0321f273d35248728e15d_cryptolocker.exe
Size

45KB
MD5

f774f400c5e0321f273d35248728e15d
SHA1

46e6a7fba78af4b616a9db65848773a604142af5
SHA256

e04905389c5f4ebfacb3c7ba1d3f2dc142ecbd75db224e824a5a8139c3b15c10
SHA512

c0e94162fcfb03a65c2236e21c7d1c5e15a832d8acdfdc709a285e768024065731fb8493f4405808be25f4c62ab4d35ac1a942be6346590060e8dd0b36d8687d
SSDEEP

768:P6LsoVEeegiZPvEhHSP+gp/QtOOtEvwDpjBBMLZdzuqpXsiE8Wq/DpkcR:P6Q0ElP6G+gJQMOtEvwDpjB8WMlfR

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/8-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00090000000224e9-13.dat	CryptoLocker_rule2
behavioral2/memory/8-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3048-26-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/8-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x00090000000224e9-13.dat	CryptoLocker_set1
behavioral2/memory/8-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3048-26-0x0000000000500000-0x000000000050B000-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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-04-05_f774f400c5e0321f273d35248728e15d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3048	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 8 wrote to memory of 3048	8	2024-04-05_f774f400c5e0321f273d35248728e15d_cryptolocker.exe	88
PID 8 wrote to memory of 3048	8	2024-04-05_f774f400c5e0321f273d35248728e15d_cryptolocker.exe	88
PID 8 wrote to memory of 3048	8	2024-04-05_f774f400c5e0321f273d35248728e15d_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-04-05_f774f400c5e0321f273d35248728e15d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-05_f774f400c5e0321f273d35248728e15d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:8
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3048

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
45KB

MD5
303aa18127df8ac58b22e131a514fc46

SHA1
b2d229054676d2e53ffda466f7700b0b17dcd613

SHA256
324e12d9bf77df0db17f2fb46a667e9d0b8481958739e0443e5c38abd48d4efe

SHA512
0af74b37ba7de333ab14e633e7f49348188249395f1ace19a046c3d890418698cc6cf1d52c3da5d8cabde03835feedd175d335c39e80d3d9022f1d54067a2f44

Download Submit
memory/8-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/8-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/8-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/8-3-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/8-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3048-19-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/3048-21-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/3048-26-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download