489cad4cc47271135162208780dcf68391af102c27aded24bdd4de5ac3c334a4

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
25/03/2024, 12:26

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General

Target

2024-03-25_1433989e8e4e108ec4c181c4c679ed59_cryptolocker.exe
Size

118KB
MD5

1433989e8e4e108ec4c181c4c679ed59
SHA1

b4a58629b709eca71dc3595be526df919951a1ca
SHA256

489cad4cc47271135162208780dcf68391af102c27aded24bdd4de5ac3c334a4
SHA512

bbe1bf0be36d4d717f347a9fede9baa79fba2f6d87bc1b5f0d740ed43cb6dc9787209a31a57b80a3af2476f7fe59a3be470e7797139a52c3cfc344cb057e9421
SSDEEP

1536:z6QFElP6n+gKmddpMOtEvwDpj3GYQbN/PKwNgp01Qatb:z6a+CdOOtEvwDpjczT

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2744-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d0000000122ce-11.dat	CryptoLocker_rule2
behavioral1/memory/2904-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2744-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2904-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2744-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000d0000000122ce-11.dat	CryptoLocker_set1
behavioral1/memory/2904-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2744-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2904-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2744-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000d0000000122ce-11.dat	UPX
behavioral1/memory/2904-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2744-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2904-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2904	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2744	2024-03-25_1433989e8e4e108ec4c181c4c679ed59_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2744-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000d0000000122ce-11.dat	upx
behavioral1/memory/2904-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2744-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2904-26-0x0000000000500000-0x0000000000510000-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 2744 wrote to memory of 2904	2744	2024-03-25_1433989e8e4e108ec4c181c4c679ed59_cryptolocker.exe	28
PID 2744 wrote to memory of 2904	2744	2024-03-25_1433989e8e4e108ec4c181c4c679ed59_cryptolocker.exe	28
PID 2744 wrote to memory of 2904	2744	2024-03-25_1433989e8e4e108ec4c181c4c679ed59_cryptolocker.exe	28
PID 2744 wrote to memory of 2904	2744	2024-03-25_1433989e8e4e108ec4c181c4c679ed59_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-25_1433989e8e4e108ec4c181c4c679ed59_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-25_1433989e8e4e108ec4c181c4c679ed59_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2744
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2904

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
118KB

MD5
de68ec66669008f459d979daa1b12745

SHA1
c375c3873b365cc03d364f395d278c9ac1987981

SHA256
131c0f37de246269084057cd71fd2c4954cbe62f95a06d61b3222f573501b79a

SHA512
2e100d809db3ba3f2c160e93f7d118fe03135d507c9ce5670ad22c1882a4c66382c447f3ab80846fdd4eb9a7992a219252d71bbed533e127809ce39b2b0ee554

Download Submit
memory/2744-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2744-1-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2744-3-0x0000000000450000-0x0000000000456000-memory.dmp

Filesize
24KB

Download
memory/2744-2-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2744-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2904-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2904-18-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/2904-19-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/2904-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download