7e527ad29c6f3d89c00dac876ece11c9faa8ee2869242143301e39e298fc0f2e

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
27/05/2024, 02:37

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General

Target

2024-05-27_8150e554c27aca8dea57b018e745ca51_cryptolocker.exe
Size

94KB
MD5

8150e554c27aca8dea57b018e745ca51
SHA1

f2ac8f75da0d7727f45e89e40d6128fdc18311c9
SHA256

7e527ad29c6f3d89c00dac876ece11c9faa8ee2869242143301e39e298fc0f2e
SHA512

3664d7e2e04c1f4183d14b728b317728a1817f016993cde4ed1dc8ce09549ef998a128f9e420bc4c66983ed4c218f13ae906ca9640e15a51e54455b6facb934b
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp0+oe:AnBdOOtEvwDpj6zBe

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/2436-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0009000000023435-13.dat	CryptoLocker_rule2
behavioral2/memory/2204-19-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2436-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2204-28-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/2436-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0009000000023435-13.dat	CryptoLocker_set1
behavioral2/memory/2204-19-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2436-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2204-28-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/2436-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/files/0x0009000000023435-13.dat	UPX
behavioral2/memory/2204-19-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/2436-18-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/2204-28-0x0000000000500000-0x000000000050F000-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-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	2024-05-27_8150e554c27aca8dea57b018e745ca51_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2204	asih.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2436-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x0009000000023435-13.dat	upx
behavioral2/memory/2204-19-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/2436-18-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/2204-28-0x0000000000500000-0x000000000050F000-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 2436 wrote to memory of 2204	2436	2024-05-27_8150e554c27aca8dea57b018e745ca51_cryptolocker.exe	82
PID 2436 wrote to memory of 2204	2436	2024-05-27_8150e554c27aca8dea57b018e745ca51_cryptolocker.exe	82
PID 2436 wrote to memory of 2204	2436	2024-05-27_8150e554c27aca8dea57b018e745ca51_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-27_8150e554c27aca8dea57b018e745ca51_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-27_8150e554c27aca8dea57b018e745ca51_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2436
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2204

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\asih.exe

Filesize
94KB

MD5
221b5e5f61858563853075a27c04631e

SHA1
8c626e7e120c528f3e9ff1ee88c1a7bd1b909ced

SHA256
95db6695c5c04302629dd63a18eb78a03191a52b7a993556b097036b7332dce2

SHA512
b99950219b26d75c95ed8f7a9fef833ef8bfb7b98775857546690a3bf7add175393f4ebca7bee176e9110c5b0711e7f289d42c19e06613302034f2b69ce24f89

Download Submit
memory/2204-19-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2204-22-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/2204-21-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/2204-28-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2436-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2436-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2436-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2436-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2436-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download