10303a0051fb91af8c81563ef54f01b5902a9b610684aa2b02b641948f29d576

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
28-05-2024 02:45

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General

Target

2024-05-28_bb3df1cf7573d12a0577a4f97288ced4_cryptolocker.exe
Size

54KB
MD5

bb3df1cf7573d12a0577a4f97288ced4
SHA1

0bba210748fd1786db3a9c76c4dcf64c50a88d1f
SHA256

10303a0051fb91af8c81563ef54f01b5902a9b610684aa2b02b641948f29d576
SHA512

724b1050bb47fbb40cbe80b23bcb9fd9ee3d9bd4e661a69ba8ab0d51efb08153a873063ca457a79181f4c98b2e272921e79f2c69e8a2556f94fb6718cd8d9f18
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjeJQ7pojaklPsL:V6a+pOtEvwDpjv

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000233c1-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000233c1-12.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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	2024-05-28_bb3df1cf7573d12a0577a4f97288ced4_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2320	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 2544 wrote to memory of 2320	2544	2024-05-28_bb3df1cf7573d12a0577a4f97288ced4_cryptolocker.exe	81
PID 2544 wrote to memory of 2320	2544	2024-05-28_bb3df1cf7573d12a0577a4f97288ced4_cryptolocker.exe	81
PID 2544 wrote to memory of 2320	2544	2024-05-28_bb3df1cf7573d12a0577a4f97288ced4_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-05-28_bb3df1cf7573d12a0577a4f97288ced4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-28_bb3df1cf7573d12a0577a4f97288ced4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2544
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2320

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
55KB

MD5
3d8d71fd8ca43ff95d60731eb1ce4ac7

SHA1
437c134534dd6d16d1a01e3cdc18357f96a79d0e

SHA256
4b322adca68930830beb1a7dfac6618ca83c09b47a3b41a72d05a1e2c21d0fba

SHA512
637cde4c4c7b168e15fd6757e1da7fca8a1fb90c721685bcb03c58dd8328f889c8feaf54a0ba2706f38231a625aad98766c14b0e3d58cd444397e52b6e7479b3

Download Submit
memory/2320-17-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/2320-23-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2544-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2544-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2544-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download