a9e728db62deb52f1a1f64aa4d8a213feca83c8692dfa7e606ff54ef69948826

Analysis

max time kernel
104s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
04/06/2024, 18:29

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General

Target

2024-06-04_e7babefcac3a2e949ef3570f89ad3c26_cryptolocker.exe
Size

24KB
MD5

e7babefcac3a2e949ef3570f89ad3c26
SHA1

ff689447eea0ccf0c1f3f800a9be7245268509e7
SHA256

a9e728db62deb52f1a1f64aa4d8a213feca83c8692dfa7e606ff54ef69948826
SHA512

1f9ac5a4cca04a8fe7e3f8f945eda1864dfe2f1a60e486b90b55ec41521c79989ceb74c2e29ce576fee4f4aef5a54dbe4d4e3d6e16680a20fbfa4f53f63a63a9
SSDEEP

384:bVCPwFRuFn65arz1ZhdaXFXSCVQTLfjDp6HMJ2A3:bVCPwFRo6CpwXFXSqQXfjAsJT

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1620-0-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000a0000000233dd-13.dat	CryptoLocker_rule2
behavioral2/memory/1620-17-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2240-26-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/1620-0-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral2/files/0x000a0000000233dd-13.dat	UPX
behavioral2/memory/1620-17-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral2/memory/2240-26-0x0000000008000000-0x000000000800E000-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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-06-04_e7babefcac3a2e949ef3570f89ad3c26_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2240	hasfj.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1620-0-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral2/files/0x000a0000000233dd-13.dat	upx
behavioral2/memory/1620-17-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral2/memory/2240-26-0x0000000008000000-0x000000000800E000-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 1620 wrote to memory of 2240	1620	2024-06-04_e7babefcac3a2e949ef3570f89ad3c26_cryptolocker.exe	83
PID 1620 wrote to memory of 2240	1620	2024-06-04_e7babefcac3a2e949ef3570f89ad3c26_cryptolocker.exe	83
PID 1620 wrote to memory of 2240	1620	2024-06-04_e7babefcac3a2e949ef3570f89ad3c26_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-06-04_e7babefcac3a2e949ef3570f89ad3c26_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-04_e7babefcac3a2e949ef3570f89ad3c26_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1620
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2240

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\hasfj.exe

Filesize
25KB

MD5
d514088e507375e94f45512c72e64960

SHA1
2fefec0d92d665d3c98301ec637a914d1c1a7504

SHA256
22c29147dea60dba579f961f5cff2cc8af2744421591faa524fc46df322dc4c3

SHA512
afb02211ef7b4865b01b75466d3551726eab33705f7e5b05f8d9021fdc152d17de48f462865fe0158a1382392fc591da2215ffe84fac37928087b2234a86cb6a

Download Submit
memory/1620-0-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/1620-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/1620-2-0x0000000002380000-0x0000000002386000-memory.dmp

Filesize
24KB

Download
memory/1620-9-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/1620-17-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/2240-19-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2240-20-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/2240-26-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download