4313bc195f4be8fe182eac6d101ba3befc66c2ee41aff0026c7e79e69004c66a

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18/02/2024, 03:40

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General

Target

2024-02-18_78c64c066f6fd9970e621fcd711fb14d_cryptolocker.exe
Size

56KB
MD5

78c64c066f6fd9970e621fcd711fb14d
SHA1

052a31768a32577598bfd40613b3babb50dfbcaf
SHA256

4313bc195f4be8fe182eac6d101ba3befc66c2ee41aff0026c7e79e69004c66a
SHA512

2df7cac6f4f2f80f55266b35b73ce8040fcaa44c1364a30357a5d3d32d0e2b1887071a5d17cb512402e2115cfe453a22eb9aeaef70b06f01cf0bd60ebd3a4d20
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb6105:BbdDmjr+OtEvwDpjMa

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4932-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000002320d-13.dat	CryptoLocker_rule2
behavioral2/memory/4932-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3508-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3508-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/4932-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3508-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3508-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/4932-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000700000002320d-13.dat	UPX
behavioral2/memory/4932-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/3508-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/3508-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation	2024-02-18_78c64c066f6fd9970e621fcd711fb14d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3508	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 4932 wrote to memory of 3508	4932	2024-02-18_78c64c066f6fd9970e621fcd711fb14d_cryptolocker.exe	84
PID 4932 wrote to memory of 3508	4932	2024-02-18_78c64c066f6fd9970e621fcd711fb14d_cryptolocker.exe	84
PID 4932 wrote to memory of 3508	4932	2024-02-18_78c64c066f6fd9970e621fcd711fb14d_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-18_78c64c066f6fd9970e621fcd711fb14d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_78c64c066f6fd9970e621fcd711fb14d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4932
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3508

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
56KB

MD5
216cfcd08045565291082a79f59e1231

SHA1
5c01c0acce78adaafe2d6105abd6d02fee0bae80

SHA256
24e5503868806616c778390569d86bd222b990b5ce7b78d680cb603013c07441

SHA512
80989635c46886db90c24516950653cb78d20b74f9eebe27528a8a15f6a5a74c6bbef9599fbe453107eeb3fc8239881d467d5f1db8acf838e66ff794234c7cb4

Download Submit
memory/3508-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3508-20-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download
memory/3508-22-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/3508-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4932-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4932-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4932-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4932-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4932-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download