e29e4615b75fabcced91584465cfc454242de9049cae142da311f5065d80dbcb

Analysis

max time kernel
147s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
04/02/2024, 00:27

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General

Target

2024-02-04_48d54ec3d59b631916956ff5b904df34_cryptolocker.exe
Size

124KB
MD5

48d54ec3d59b631916956ff5b904df34
SHA1

34fad3dd283e072b58ff9003c0ad816cbd52fc11
SHA256

e29e4615b75fabcced91584465cfc454242de9049cae142da311f5065d80dbcb
SHA512

8322affacd14d306297ff8fa989886212e743812b8b6506eadfd9f919c80eef53b0e9c521d6bbbaab8d78d062de8151e8c07f3f88884220e9bf7a5a14546e959
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp699GNtL1eImo:AnBdOOtEvwDpj6zY

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4320-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4320-10-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023137-14.dat	CryptoLocker_rule2
behavioral2/memory/2384-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4320-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4320-10-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0007000000023137-14.dat	CryptoLocker_set1
behavioral2/memory/2384-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/4320-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/4320-10-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/files/0x0007000000023137-14.dat	UPX
behavioral2/memory/2384-27-0x0000000000500000-0x000000000050F000-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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-02-04_48d54ec3d59b631916956ff5b904df34_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2384	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4320-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/4320-10-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x0007000000023137-14.dat	upx
behavioral2/memory/2384-27-0x0000000000500000-0x000000000050F000-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 4320 wrote to memory of 2384	4320	2024-02-04_48d54ec3d59b631916956ff5b904df34_cryptolocker.exe	84
PID 4320 wrote to memory of 2384	4320	2024-02-04_48d54ec3d59b631916956ff5b904df34_cryptolocker.exe	84
PID 4320 wrote to memory of 2384	4320	2024-02-04_48d54ec3d59b631916956ff5b904df34_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-04_48d54ec3d59b631916956ff5b904df34_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-04_48d54ec3d59b631916956ff5b904df34_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4320
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2384

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
124KB

MD5
520323a785a9848b0ae5f06181d8d58a

SHA1
cbfb2011e93ddcd2037ebc523651e19dc48209c8

SHA256
cdcf2bc5ae00e237288220296af35d9f94be17bd34e0054081230c3b2108a5b4

SHA512
a44e129e959eb5fb9e06d529a2b595daf3464f57d2cef0c4ee2160799ec6a555238b9d02725181e752ffc96fa289ab2d21c9302e884b520120e0355c1311618d

Download Submit
memory/2384-20-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/2384-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2384-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4320-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4320-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4320-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4320-3-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4320-10-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download