4de7f3e991e9b1ebdeb48dfac8056d366ae0214caaed44ae4a1b175ae428378e

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
27/05/2024, 19:44

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General

Target

2024-05-27_b398cc6d62c4e88f2ac307ec57b0071b_cryptolocker.exe
Size

60KB
MD5

b398cc6d62c4e88f2ac307ec57b0071b
SHA1

44a9b395c020869a359d602e55a0c4befa940960
SHA256

4de7f3e991e9b1ebdeb48dfac8056d366ae0214caaed44ae4a1b175ae428378e
SHA512

6d09566a1d8259eaae875d71cfc6d3b2fd193e6555081bc4331bc6ac6ca4848cecc275b3b98fc0a291fde806f2491d96f921c83fcbe1ad6f9a1e461a4b380cec
SSDEEP

1536:z6QFElP6n+gKmddpMOtEvwDpj9aYaQ8vO:z6a+CdOOtEvwDpjQ8

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2848-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c0000000146fc-11.dat	CryptoLocker_rule2
behavioral1/memory/2848-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2540-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2848-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c0000000146fc-11.dat	CryptoLocker_set1
behavioral1/memory/2848-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2540-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/2848-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000c0000000146fc-11.dat	UPX
behavioral1/memory/2848-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2540-25-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2540	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2848	2024-05-27_b398cc6d62c4e88f2ac307ec57b0071b_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2848-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000c0000000146fc-11.dat	upx
behavioral1/memory/2848-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2540-25-0x0000000000500000-0x0000000000510000-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 4 IoCs

description	pid	Process	procid_target
PID 2848 wrote to memory of 2540	2848	2024-05-27_b398cc6d62c4e88f2ac307ec57b0071b_cryptolocker.exe	28
PID 2848 wrote to memory of 2540	2848	2024-05-27_b398cc6d62c4e88f2ac307ec57b0071b_cryptolocker.exe	28
PID 2848 wrote to memory of 2540	2848	2024-05-27_b398cc6d62c4e88f2ac307ec57b0071b_cryptolocker.exe	28
PID 2848 wrote to memory of 2540	2848	2024-05-27_b398cc6d62c4e88f2ac307ec57b0071b_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-27_b398cc6d62c4e88f2ac307ec57b0071b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-27_b398cc6d62c4e88f2ac307ec57b0071b_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2848
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2540

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
60KB

MD5
582d756dc22dca5a00819ff8bf7fdb35

SHA1
4838ad9b2d6d59beea701758ff387e687173c7f8

SHA256
836d42a187b2fa941c0a1cb4c72318b6c1e86afd9ce7439ed0e503b158bd1e6b

SHA512
94f0b9d818a80fd31948eee33790c758b38b40e1a0d8f6957c191963290e23e2b328280d23bff65fb2b93c34be60883eed378db4fb26e80b89484052fd8f4fac

Download Submit
memory/2540-17-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2540-24-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2540-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2848-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2848-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2848-2-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2848-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2848-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download