e67b334c6d89050375ad87ffb1ca738904d18ad885f16f8716e2e497e13193b3

General

Target

2024-05-30_744219c864c0cda26d5a5513c61e3add_cryptolocker.exe
Size

75KB
MD5

744219c864c0cda26d5a5513c61e3add
SHA1

b3260027259c5e364b1ac7e04b5e87b8beb8b0e6
SHA256

e67b334c6d89050375ad87ffb1ca738904d18ad885f16f8716e2e497e13193b3
SHA512

a890e101bd9dd24acc859ed72873ce69e4b7dbf0e94600b2a878c13a12bb55d94d1abfcfd41e3cb28b876ae27ef91ac974c85d339cf8e64ebd6352042099f745
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHsal81G+:1nK6a+qdOOtEvwDpjv

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/940-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0007000000012120-11.dat	CryptoLocker_rule2
behavioral1/memory/940-12-0x0000000001DA0000-0x0000000001DB0000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/940-16-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2196-17-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2196-27-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 6 IoCs

resource	yara_rule
behavioral1/memory/940-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/files/0x0007000000012120-11.dat	CryptoLocker_set1
behavioral1/memory/940-12-0x0000000001DA0000-0x0000000001DB0000-memory.dmp	CryptoLocker_set1
behavioral1/memory/940-16-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/memory/2196-17-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/memory/2196-27-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

resource	yara_rule
behavioral1/memory/940-0-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/files/0x0007000000012120-11.dat	UPX
behavioral1/memory/940-12-0x0000000001DA0000-0x0000000001DB0000-memory.dmp	UPX
behavioral1/memory/940-16-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/memory/2196-17-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/memory/2196-27-0x0000000000500000-0x000000000050F311-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2196	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
940	2024-05-30_744219c864c0cda26d5a5513c61e3add_cryptolocker.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/940-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/files/0x0007000000012120-11.dat	upx
behavioral1/memory/940-12-0x0000000001DA0000-0x0000000001DB0000-memory.dmp	upx
behavioral1/memory/940-16-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/2196-17-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/2196-27-0x0000000000500000-0x000000000050F311-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 940 wrote to memory of 2196	940	2024-05-30_744219c864c0cda26d5a5513c61e3add_cryptolocker.exe	28
PID 940 wrote to memory of 2196	940	2024-05-30_744219c864c0cda26d5a5513c61e3add_cryptolocker.exe	28
PID 940 wrote to memory of 2196	940	2024-05-30_744219c864c0cda26d5a5513c61e3add_cryptolocker.exe	28
PID 940 wrote to memory of 2196	940	2024-05-30_744219c864c0cda26d5a5513c61e3add_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-30_744219c864c0cda26d5a5513c61e3add_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-30_744219c864c0cda26d5a5513c61e3add_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:940
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2196

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
76KB

MD5
b782e97877668fa371be175620f1d928

SHA1
8d68b35cff3252456a87c0c286b474f890738c1e

SHA256
054881eeff5bac5fb89bdec39f84c4777b9e90f8b105855aeb000a70b036224f

SHA512
10c49c20d96ded78120d8d8c5ea9cf1aa25a757b33148cacbae146477c41f01d471427690161687dc94416e3b8df738aea77789c461f62ac4dde0e77793e1005

Download Submit
memory/940-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/940-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/940-2-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/940-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/940-12-0x0000000001DA0000-0x0000000001DB0000-memory.dmp

Filesize
64KB

Download
memory/940-16-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2196-17-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2196-26-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2196-27-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download

Analysis

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