ae5b6978ad96f502a04ea64f94e228f0607955670733f9e9794d1e0eec1b03b3

Analysis

max time kernel
147s
max time network
148s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
26/05/2024, 04:26

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General

Target

2024-05-26_6bb2c0e8946fb6a65e72b25049ce1497_cryptolocker.exe
Size

90KB
MD5

6bb2c0e8946fb6a65e72b25049ce1497
SHA1

95cbb72cb3f45c4d7f1ddf5779de82c966d3d4a5
SHA256

ae5b6978ad96f502a04ea64f94e228f0607955670733f9e9794d1e0eec1b03b3
SHA512

8f426f668937f367c88cd228b0ee49c86ff82f96e8c7d31bf14eab6214e73df12c6d7493fbac7d28d395754ccb738cc15fda20af9485981115dfdeb199db85e4
SSDEEP

1536:n6QFElP6n+g9u9cvMOtEvwDpjYYTjipvF2bx1PQAyJ:n6a+1SEOtEvwDpjYYvQd2Pg

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2952-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c00000001227b-11.dat	CryptoLocker_rule2
behavioral1/memory/2684-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2952-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2684-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2952-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c00000001227b-11.dat	CryptoLocker_set1
behavioral1/memory/2684-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2952-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2684-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2952-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000c00000001227b-11.dat	UPX
behavioral1/memory/2684-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2952-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2684-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2684	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2952	2024-05-26_6bb2c0e8946fb6a65e72b25049ce1497_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2952-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000c00000001227b-11.dat	upx
behavioral1/memory/2684-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2952-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2684-26-0x0000000000500000-0x0000000000510000-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 2952 wrote to memory of 2684	2952	2024-05-26_6bb2c0e8946fb6a65e72b25049ce1497_cryptolocker.exe	28
PID 2952 wrote to memory of 2684	2952	2024-05-26_6bb2c0e8946fb6a65e72b25049ce1497_cryptolocker.exe	28
PID 2952 wrote to memory of 2684	2952	2024-05-26_6bb2c0e8946fb6a65e72b25049ce1497_cryptolocker.exe	28
PID 2952 wrote to memory of 2684	2952	2024-05-26_6bb2c0e8946fb6a65e72b25049ce1497_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-26_6bb2c0e8946fb6a65e72b25049ce1497_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-26_6bb2c0e8946fb6a65e72b25049ce1497_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2952
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2684

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
90KB

MD5
6682adce728a988fb6f324532b300b4c

SHA1
da222e8ed4ad99a36ca1d84ddaf9ea19e1f37614

SHA256
105d1f619d01223cfa7d9c8350ef431196e986e5b8208fd2cbc122cdbb4ba516

SHA512
9e4b71418f5a9af73761f148f18d68188dd9d729bd17f1ab641a86cc210910937200731b6d164d4192e36e999f7c578118d33561bb9487ba397474e272dde429

Download Submit
memory/2684-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2684-18-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2684-25-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2684-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2952-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2952-1-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2952-2-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/2952-9-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2952-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download