21d60ed3422857fb1657967eb8bcf56dc22af98554305cc226b1829934b4f4ca

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
09/06/2024, 20:54

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General

Target

2024-06-09_dd0909370af7ea8fcface8c0985eb976_cryptolocker.exe
Size

89KB
MD5

dd0909370af7ea8fcface8c0985eb976
SHA1

cb4249196116c46a37d47cd07788c307b5cc3fb1
SHA256

21d60ed3422857fb1657967eb8bcf56dc22af98554305cc226b1829934b4f4ca
SHA512

080f616fa05ea8a0f6d2169303f0628bac3fb8ad28d9451c9336cc9131999a97365c803f6470cab1194159fe6de15993c37e835e2a5c9422f51050d9509ff76b
SSDEEP

768:qkmnjFom/kLyMro2GtOOtEvwDpjeY10Y/YMsvlMdwPK80GQuchoIgtIODwX:qkmnpomddpMOtEvwDpjJGYQbN/PKwMg6

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1616-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0009000000023400-13.dat	CryptoLocker_rule2
behavioral2/memory/1616-19-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3592-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3592-28-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/1616-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0009000000023400-13.dat	CryptoLocker_set1
behavioral2/memory/1616-19-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3592-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3592-28-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/1616-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/files/0x0009000000023400-13.dat	UPX
behavioral2/memory/1616-19-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/3592-18-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/3592-28-0x0000000000500000-0x000000000050F000-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-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	2024-06-09_dd0909370af7ea8fcface8c0985eb976_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3592	asih.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/1616-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x0009000000023400-13.dat	upx
behavioral2/memory/1616-19-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/3592-18-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/3592-28-0x0000000000500000-0x000000000050F000-memory.dmp	upx

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 1616 wrote to memory of 3592	1616	2024-06-09_dd0909370af7ea8fcface8c0985eb976_cryptolocker.exe	82
PID 1616 wrote to memory of 3592	1616	2024-06-09_dd0909370af7ea8fcface8c0985eb976_cryptolocker.exe	82
PID 1616 wrote to memory of 3592	1616	2024-06-09_dd0909370af7ea8fcface8c0985eb976_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-09_dd0909370af7ea8fcface8c0985eb976_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-09_dd0909370af7ea8fcface8c0985eb976_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1616
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3592

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
90KB

MD5
3b08d2426b559f5529c716aae759d533

SHA1
88117aace70b306050ff16d59ad85524f251f2eb

SHA256
6d82b41490f8009f94d62a9c6a6213e14f3771ddb4a51d6a7c336ee30d158134

SHA512
0bf8008407d5abd873c4ec1b69e362592d53e21c4a020fa697fa0093078b9f9511e48904b58636155b1326526734087d3744d5ea7867948e1caa36b9fdf09f13

Download Submit
memory/1616-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1616-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1616-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1616-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1616-19-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3592-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3592-21-0x0000000001F70000-0x0000000001F76000-memory.dmp

Filesize
24KB

Download
memory/3592-27-0x0000000001F50000-0x0000000001F56000-memory.dmp

Filesize
24KB

Download
memory/3592-28-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download