269ada2e52f7c60c30606a0080cfea650eb8dace2371d800d274768258ebff31

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
24/04/2024, 14:34

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-04-24_cc6cd54e63a242e7a79d5602ff5684c1_cryptolocker.exe
Size

88KB
MD5

cc6cd54e63a242e7a79d5602ff5684c1
SHA1

631a4be6eef779d71a42b914fc07984f07218b59
SHA256

269ada2e52f7c60c30606a0080cfea650eb8dace2371d800d274768258ebff31
SHA512

aca24b6ce650785df816b8af97bc5ecc1c26d0a9e2d47260e167dce6d76013f63dd1d7b1b568603015107a27498a50dd57232d571166a898133ed47b62b385a2
SSDEEP

1536:n6QFElP6n+g9u9cvMOtEvwDpjYYTjipvF2bx1PQAAz:n6a+1SEOtEvwDpjYYvQd2PU

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2940-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x001c00000001e97e-13.dat	CryptoLocker_rule2
behavioral2/memory/2940-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1704-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/2940-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x001c00000001e97e-13.dat	CryptoLocker_set1
behavioral2/memory/2940-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1704-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/2940-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x001c00000001e97e-13.dat	UPX
behavioral2/memory/2940-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/1704-26-0x0000000000500000-0x0000000000510000-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-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	2024-04-24_cc6cd54e63a242e7a79d5602ff5684c1_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1704	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2940-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x001c00000001e97e-13.dat	upx
behavioral2/memory/2940-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1704-26-0x0000000000500000-0x0000000000510000-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 2940 wrote to memory of 1704	2940	2024-04-24_cc6cd54e63a242e7a79d5602ff5684c1_cryptolocker.exe	88
PID 2940 wrote to memory of 1704	2940	2024-04-24_cc6cd54e63a242e7a79d5602ff5684c1_cryptolocker.exe	88
PID 2940 wrote to memory of 1704	2940	2024-04-24_cc6cd54e63a242e7a79d5602ff5684c1_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-04-24_cc6cd54e63a242e7a79d5602ff5684c1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-24_cc6cd54e63a242e7a79d5602ff5684c1_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2940
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1704

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
89KB

MD5
83ed938a6815753a2a7827372da17f1f

SHA1
da39ecd47e143fdb837a395d95ecd052484366b9

SHA256
f28c24ae546616a204d0b33771b35696635ade2e8b79f67bcb97b641381149e0

SHA512
29082047b44cfb3bd5b3c3de68cc863096d7d46cae68c0939c8fc7c50708c42ce0ed54d7100ef0844a0c972734d132e775cbbe6416dbe6084f49cbf6945b76ad

Download Submit
memory/1704-19-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/1704-21-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/1704-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2940-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2940-1-0x0000000000690000-0x0000000000696000-memory.dmp

Filesize
24KB

Download
memory/2940-2-0x0000000000690000-0x0000000000696000-memory.dmp

Filesize
24KB

Download
memory/2940-3-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/2940-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download