6e917a3285d87d65f46cdd3690fcc9a626faee14496bf0900620049ac75e6a63

Analysis

max time kernel
147s
max time network
149s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
24/02/2024, 04:28

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General

Target

2024-02-24_1fc3b5017b770e50743ce6b15517cbff_cryptolocker.exe
Size

87KB
MD5

1fc3b5017b770e50743ce6b15517cbff
SHA1

2ae8f536f9ed76ccd9add5827c2d757db014665c
SHA256

6e917a3285d87d65f46cdd3690fcc9a626faee14496bf0900620049ac75e6a63
SHA512

2099b60a4f6264802370ba4a32fd87f817482d8681140a1096b58a26377d3064d882398ca711ad8c667306aa2bf042795b7268d58459082f2414d30f07d33220
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgh5:AnBdOOtEvwDpj6zL

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2004-8-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000012339-14.dat	CryptoLocker_rule2
behavioral1/memory/3020-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3020-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2004-8-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c000000012339-14.dat	CryptoLocker_set1
behavioral1/memory/3020-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3020-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/2004-8-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/files/0x000c000000012339-14.dat	UPX
behavioral1/memory/3020-17-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/3020-26-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
3020	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2004	2024-02-24_1fc3b5017b770e50743ce6b15517cbff_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2004-8-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000c000000012339-14.dat	upx
behavioral1/memory/3020-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/3020-26-0x0000000000500000-0x000000000050F000-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 4 IoCs

description	pid	Process	procid_target
PID 2004 wrote to memory of 3020	2004	2024-02-24_1fc3b5017b770e50743ce6b15517cbff_cryptolocker.exe	19
PID 2004 wrote to memory of 3020	2004	2024-02-24_1fc3b5017b770e50743ce6b15517cbff_cryptolocker.exe	19
PID 2004 wrote to memory of 3020	2004	2024-02-24_1fc3b5017b770e50743ce6b15517cbff_cryptolocker.exe	19
PID 2004 wrote to memory of 3020	2004	2024-02-24_1fc3b5017b770e50743ce6b15517cbff_cryptolocker.exe	19

C:\Users\Admin\AppData\Local\Temp\2024-02-24_1fc3b5017b770e50743ce6b15517cbff_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-24_1fc3b5017b770e50743ce6b15517cbff_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2004
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3020

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

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

Filesize
87KB

MD5
7afa267e76cf18a28e2191b2c4a2813a

SHA1
ecd16c6114f3ee541c627dc5ef0505b20cbee4f0

SHA256
3a46d5f52356e5aaa4ca86001d1ccbf7818b1d9b9bc85fbd76ca3059522e45c9

SHA512
b26fc6c54fcf3dcdf7248e70b5c3a2fb23ef1f5d763c8bcb87897133c831d1d25802862f899a0f4edba1fc66d5472fe395aaf56a0b27d22894f85528b5cbf36e

Download Submit
memory/2004-1-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2004-0-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2004-8-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2004-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/3020-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3020-18-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/3020-19-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/3020-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download