70218da4b45debd57998d21c1b3f918820d3db2d6770b4bc47070de6e765ccd3

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
24-01-2024 02:52

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General

Target

2024-01-24_5508604443778f9e75dfb0bd62cc0fc4_cryptolocker.exe
Size

78KB
MD5

5508604443778f9e75dfb0bd62cc0fc4
SHA1

a9c4eafc657e7403528cb13bca892ff6789a43c7
SHA256

70218da4b45debd57998d21c1b3f918820d3db2d6770b4bc47070de6e765ccd3
SHA512

d715e8211c691af91374ebc7d27b61697a069ccda4ce2497e47e4c174f48cdab452b8f3ff886afdff5c7b9a33a340897e87c5212ed9f68dcfa1b12afec6fc963
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLa5VccPtNw5CS95yFPc:V6QFElP6n+gMQMOtEvwDpjyaLccVNlW

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231f7-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231f7-12.dat	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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-01-24_5508604443778f9e75dfb0bd62cc0fc4_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2464	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 4712 wrote to memory of 2464	4712	2024-01-24_5508604443778f9e75dfb0bd62cc0fc4_cryptolocker.exe	87
PID 4712 wrote to memory of 2464	4712	2024-01-24_5508604443778f9e75dfb0bd62cc0fc4_cryptolocker.exe	87
PID 4712 wrote to memory of 2464	4712	2024-01-24_5508604443778f9e75dfb0bd62cc0fc4_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-01-24_5508604443778f9e75dfb0bd62cc0fc4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-24_5508604443778f9e75dfb0bd62cc0fc4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4712
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2464

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
79KB

MD5
a17567582afea39b1436ccc97211c109

SHA1
c26e67e71b4339dee1e2c3a501adbab551eb6e8e

SHA256
2a78e8c9a1706b784953ebd28cf754356f2222c973762b091124d48b5b7e89eb

SHA512
ce30426972ded9948e63832895d7462e8c30046b1900986bc304f4bd98d4a45035964300afd0aa65cd07b2d1201cdd5abd0bea28f49ec47b560f9ea026421c01

Download Submit
memory/2464-17-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/2464-19-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4712-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/4712-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/4712-2-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download