9200154c81fac0d1105fc064145d39a30d2bd149613211d75f7e092c5da1bde0

Analysis

max time kernel
155s
max time network
164s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
03/02/2024, 08:34

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General

Target

2024-02-03_95f91abd5aad398828d772291b74be7b_cryptolocker.exe
Size

59KB
MD5

95f91abd5aad398828d772291b74be7b
SHA1

52b74938d1aab25fed47c575bdf2010b658e1d29
SHA256

9200154c81fac0d1105fc064145d39a30d2bd149613211d75f7e092c5da1bde0
SHA512

891b24abee99d025717b78a1a3e347353d8b8f398bc7f94c868650096a929a0ed2e6e425db872f78e4df7fe6bd7e75ba4a5bdb34df73843e16ebecf50a183422
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61vSbgts+:BbdDmjr+OtEvwDpjM8m

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2772-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000800000001222d-11.dat	CryptoLocker_rule2
behavioral1/memory/2772-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2812-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2812-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/2772-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2812-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2812-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2772-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000800000001222d-11.dat	UPX
behavioral1/memory/2772-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2812-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2812-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2812	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2772	2024-02-03_95f91abd5aad398828d772291b74be7b_cryptolocker.exe

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 2772 wrote to memory of 2812	2772	2024-02-03_95f91abd5aad398828d772291b74be7b_cryptolocker.exe	27
PID 2772 wrote to memory of 2812	2772	2024-02-03_95f91abd5aad398828d772291b74be7b_cryptolocker.exe	27
PID 2772 wrote to memory of 2812	2772	2024-02-03_95f91abd5aad398828d772291b74be7b_cryptolocker.exe	27
PID 2772 wrote to memory of 2812	2772	2024-02-03_95f91abd5aad398828d772291b74be7b_cryptolocker.exe	27

C:\Users\Admin\AppData\Local\Temp\2024-02-03_95f91abd5aad398828d772291b74be7b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-03_95f91abd5aad398828d772291b74be7b_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2772
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2812

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
60KB

MD5
48fa6f841841a330c791924b49fa30b6

SHA1
369961e9053b9290c8f5027649f8d07674000425

SHA256
c1f432d4b30694485d3f348f3dbdc27a8b4766e5b8317ab21cd3a3488ea3f1ea

SHA512
114e36262e10b50d6cd293a203e476613228a1f1b672c75665520e1b09ee8a9e508a6d8ddc260e138b48a64bfee9a105bbd3e91864209061d25ef8f051a4344c

Download Submit
memory/2772-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2772-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2772-2-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2772-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2772-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2812-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2812-18-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/2812-19-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2812-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download