92e6e4beda1a025b58cda74b25a3d004e0bf1efff98742ada0ad830bb9563725

Analysis

max time kernel
150s
max time network
141s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
28/03/2024, 04:48

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General

Target

2024-03-28_a105bfbdad3761df68181e39706828c2_cryptolocker.exe
Size

88KB
MD5

a105bfbdad3761df68181e39706828c2
SHA1

e31f6e7a9aaf23cdba607674fdd82b9e352cef18
SHA256

92e6e4beda1a025b58cda74b25a3d004e0bf1efff98742ada0ad830bb9563725
SHA512

8fb62f875a6c250e88d08b3cc44002c9ddd2ffbfef60d22a0690df0350906e9fed9179d432817b68b68d51954356d6c80c2a00089b5f7bbead180f43cbe92502
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwMg8Wo:AnBdOOtEvwDpj6zg

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1692-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b00000001222b-11.dat	CryptoLocker_rule2
behavioral1/memory/1692-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3068-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3068-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/1692-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b00000001222b-11.dat	CryptoLocker_set1
behavioral1/memory/1692-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3068-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3068-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1692-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/files/0x000b00000001222b-11.dat	UPX
behavioral1/memory/1692-15-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/3068-16-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/3068-26-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
3068	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1692	2024-03-28_a105bfbdad3761df68181e39706828c2_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1692-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000b00000001222b-11.dat	upx
behavioral1/memory/1692-15-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/3068-16-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/3068-26-0x0000000000500000-0x000000000050F000-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 1692 wrote to memory of 3068	1692	2024-03-28_a105bfbdad3761df68181e39706828c2_cryptolocker.exe	28
PID 1692 wrote to memory of 3068	1692	2024-03-28_a105bfbdad3761df68181e39706828c2_cryptolocker.exe	28
PID 1692 wrote to memory of 3068	1692	2024-03-28_a105bfbdad3761df68181e39706828c2_cryptolocker.exe	28
PID 1692 wrote to memory of 3068	1692	2024-03-28_a105bfbdad3761df68181e39706828c2_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-28_a105bfbdad3761df68181e39706828c2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-28_a105bfbdad3761df68181e39706828c2_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1692
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3068

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
89KB

MD5
875cbfee2eeb51620c37621aa269e6ca

SHA1
bff7b79b699d3d4cc8c116f63a5a8b2ad7477363

SHA256
a42b320b12f83a18edf7f3e851da0e538a38f3d7d8e0b8f9eddac149d5c703ef

SHA512
e512e43cfa8ffdcb93b34cc9af9c3819d1b75a1ca74203000627617ba69ea6795863eec6ac917c99cca87fa4a2a55d020d595b6d118b7cbb904f37230eb5a2e2

Download Submit
memory/1692-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1692-1-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/1692-2-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/1692-4-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/1692-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3068-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3068-18-0x0000000000450000-0x0000000000456000-memory.dmp

Filesize
24KB

Download
memory/3068-20-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/3068-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download