5a71ec0fca52d36a0fa5e7aedae9b26af9bb1741b896af3dc24890197ab5730a

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
17-02-2024 07:51

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General

Target

2024-02-17_c483ff063146e1efe12403550600ee69_cryptolocker.exe
Size

61KB
MD5

c483ff063146e1efe12403550600ee69
SHA1

cfe8ef09717ee1b99d37d2444730abbff7cac07f
SHA256

5a71ec0fca52d36a0fa5e7aedae9b26af9bb1741b896af3dc24890197ab5730a
SHA512

c5bf257d59d6819bd2ff53cabee3ea16f0f8745aea0ced57438e20cebd695b0abdb2336d8cfcf1f0cf28d42d65a20ecebf2b03877c36b46fc1d67994dfdbf1c7
SSDEEP

768:zQz7yVEhs9+syJP6ntOOtEvwDpjFelaB7yBEY9Su8F5mnVs:zj+soPSMOtEvwDpj4kpmeLmnS

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1648-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002325a-13.dat	CryptoLocker_rule2
behavioral2/memory/1648-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3976-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1648-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000002325a-13.dat	CryptoLocker_set1
behavioral2/memory/1648-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3976-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/1648-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000800000002325a-13.dat	UPX
behavioral2/memory/1648-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/3976-25-0x0000000000500000-0x0000000000510000-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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-02-17_c483ff063146e1efe12403550600ee69_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3976	misid.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1648-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000800000002325a-13.dat	upx
behavioral2/memory/1648-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/3976-25-0x0000000000500000-0x0000000000510000-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 1648 wrote to memory of 3976	1648	2024-02-17_c483ff063146e1efe12403550600ee69_cryptolocker.exe	84
PID 1648 wrote to memory of 3976	1648	2024-02-17_c483ff063146e1efe12403550600ee69_cryptolocker.exe	84
PID 1648 wrote to memory of 3976	1648	2024-02-17_c483ff063146e1efe12403550600ee69_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-17_c483ff063146e1efe12403550600ee69_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-17_c483ff063146e1efe12403550600ee69_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1648
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3976

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
62KB

MD5
e9027ccb8a115f10f2e0303242e27ce0

SHA1
c828100fcd092c776a8d59487401f8a4ede98677

SHA256
b7c0d74435f8a64262ab1da4dfee00c90b1d4763f6e2c8ee83766033c17a46d0

SHA512
3ca92ab8ee207c00a55bdc853de85ac4dadbab8232906aa7a22207795d060e8b701e93cb66e2476f1cbae9523d22c1fe6c72a82011ccac899cc7849665be9964

Download Submit
memory/1648-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1648-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1648-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1648-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1648-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3976-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download