882352168cd422e5ffd6fd3160ad288897f65cf3f77f9c4537e8da50c7a58d88

Analysis

max time kernel
87s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
12/02/2024, 20:07

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General

Target

2024-02-12_8eceb80b4cbcc25a5362f4b51aec2886_cryptolocker.exe
Size

55KB
MD5

8eceb80b4cbcc25a5362f4b51aec2886
SHA1

7d6df5a6046552cfecee28b59bc4c98cde16a5ec
SHA256

882352168cd422e5ffd6fd3160ad288897f65cf3f77f9c4537e8da50c7a58d88
SHA512

bed29b3f3d3cf95af76e7d9ef4dc20753bc7cceed037e00de5941fba0e885fe0d9ac93ab314859fb3a8472cd96e99cbf3f05f38d3125be3c2b358c9d3bd04c96
SSDEEP

768:zQz7yVEhs9+syJP6ntOOtEvwDpjFeV0ZOfcpLDWE:zj+soPSMOtEvwDpj4yD5

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1332-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00070000000231ea-13.dat	CryptoLocker_rule2
behavioral2/memory/1332-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3016-56-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1332-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x00070000000231ea-13.dat	CryptoLocker_set1
behavioral2/memory/1332-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3016-56-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/1332-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x00070000000231ea-13.dat	UPX
behavioral2/memory/1332-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/3016-56-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Checks computer location settings 2 TTPs 2 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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-02-12_8eceb80b4cbcc25a5362f4b51aec2886_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
3016	misid.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1332-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x00070000000231ea-13.dat	upx
behavioral2/memory/1332-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/3016-56-0x0000000000500000-0x0000000000510000-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 1332 wrote to memory of 3016	1332	2024-02-12_8eceb80b4cbcc25a5362f4b51aec2886_cryptolocker.exe	83
PID 1332 wrote to memory of 3016	1332	2024-02-12_8eceb80b4cbcc25a5362f4b51aec2886_cryptolocker.exe	83
PID 1332 wrote to memory of 3016	1332	2024-02-12_8eceb80b4cbcc25a5362f4b51aec2886_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-12_8eceb80b4cbcc25a5362f4b51aec2886_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_8eceb80b4cbcc25a5362f4b51aec2886_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1332
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:3016

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\misid.exe

Filesize
55KB

MD5
98988b227506a444714cc80c8c243a64

SHA1
de52f8d04c5f7f1424ea61231b2c94608cad421a

SHA256
7a0e52d0d58a370b30e3335df2e98cb6b66d954d217e66b84bb359ac9c54fb9e

SHA512
e3f9dd16a84c3af60356aabc1b584918e75ab37b80b7ccabf5bdb707a1fbcfb2402769ba4b8811762d2fc2307815b37e21651a5afa255144137a7c9e6833ba75

Download Submit
memory/1332-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1332-1-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/1332-2-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/1332-3-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/1332-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3016-19-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/3016-20-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/3016-56-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download