a62e10ba48930ba338e5b47dfec4dbfc61c577fb0013e05ebe6e842d93e86978

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/02/2024, 16:38

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General

Target

2024-02-28_449a114f8b7257cd1e6c199b89749820_cryptolocker.exe
Size

83KB
MD5

449a114f8b7257cd1e6c199b89749820
SHA1

9cfe638231d30acc771de6501dab20bd01dd0bb5
SHA256

a62e10ba48930ba338e5b47dfec4dbfc61c577fb0013e05ebe6e842d93e86978
SHA512

ec88a09dcbee53438cfe425f6ba1d2392c1dae9ace4514eb92003fd97d633ed5baa843429a4d2024ac318a06986d2ca4a85a188e038f3d0b6985d43156f51e6d
SSDEEP

1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMAe59:TCjsIOtEvwDpj5HE/OUHnSMF

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4956-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0009000000023231-13.dat	CryptoLocker_rule2
behavioral2/memory/4956-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4968-52-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4956-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0009000000023231-13.dat	CryptoLocker_set1
behavioral2/memory/4956-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4968-52-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	2024-02-28_449a114f8b7257cd1e6c199b89749820_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
4968	misid.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 4956 wrote to memory of 4968	4956	2024-02-28_449a114f8b7257cd1e6c199b89749820_cryptolocker.exe	89
PID 4956 wrote to memory of 4968	4956	2024-02-28_449a114f8b7257cd1e6c199b89749820_cryptolocker.exe	89
PID 4956 wrote to memory of 4968	4956	2024-02-28_449a114f8b7257cd1e6c199b89749820_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-02-28_449a114f8b7257cd1e6c199b89749820_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_449a114f8b7257cd1e6c199b89749820_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4956
- 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:4968

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

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Downloads

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

Filesize
83KB

MD5
760b7946a426106701c5d47ced687c21

SHA1
1a5916df6825efbd3c5f33edb739cf7b3fc6c490

SHA256
64389b072a36d85c22ffaf7d811e5b5b52aaa906b1ba3be73fb6034ef66a870c

SHA512
55a7fc0a7b39bc6fbcaca20e98326c430f9071932dc20cadb8c7e9cfa564dde638323856047ec9758007e2a8047a19b4e75f6cc5de702f444e23106177079eaa

Download Submit
memory/4956-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4956-1-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/4956-2-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/4956-3-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/4956-17-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4968-19-0x00000000007E0000-0x00000000007E6000-memory.dmp

Filesize
24KB

Download
memory/4968-21-0x00000000007C0000-0x00000000007C6000-memory.dmp

Filesize
24KB

Download
memory/4968-52-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download