ec06e97a8e9cc8e8aa3d05cc02d62195a8c99b23bc77bfb3953354ea630126d5

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
18/04/2024, 05:01

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General

Target

2024-04-18_b0810dcf53752272fd4cbbbb0206cf31_cryptolocker.exe
Size

54KB
MD5

b0810dcf53752272fd4cbbbb0206cf31
SHA1

c5bf3d896ef0193c832c3fc6c03d2c35185f651c
SHA256

ec06e97a8e9cc8e8aa3d05cc02d62195a8c99b23bc77bfb3953354ea630126d5
SHA512

0014c15be151e7245f6c75b9d62795d9f73a94004294806651cf9e245dce4ba3c52df706f26b9c8b582b99464259c9a038b56aff49e346e57caaa4a0ef20b55a
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb6Impy6:BbdDmjr+OtEvwDpjMN

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1760-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d000000012267-15.dat	CryptoLocker_rule2
behavioral1/memory/2012-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1760-14-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2012-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/2012-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1760-14-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2012-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1760-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000d000000012267-15.dat	UPX
behavioral1/memory/2012-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1760-14-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2012-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2012	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1760	2024-04-18_b0810dcf53752272fd4cbbbb0206cf31_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 1760 wrote to memory of 2012	1760	2024-04-18_b0810dcf53752272fd4cbbbb0206cf31_cryptolocker.exe	28
PID 1760 wrote to memory of 2012	1760	2024-04-18_b0810dcf53752272fd4cbbbb0206cf31_cryptolocker.exe	28
PID 1760 wrote to memory of 2012	1760	2024-04-18_b0810dcf53752272fd4cbbbb0206cf31_cryptolocker.exe	28
PID 1760 wrote to memory of 2012	1760	2024-04-18_b0810dcf53752272fd4cbbbb0206cf31_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-18_b0810dcf53752272fd4cbbbb0206cf31_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-18_b0810dcf53752272fd4cbbbb0206cf31_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1760
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2012

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

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

Filesize
54KB

MD5
eec95ecd9841803ff5feddb95a5d8f68

SHA1
65f5519537c69cca076991de0e3dcd9342491415

SHA256
7427aaa01cdb69ca0c1cb756db6613528d88423ca46fa2ca4d9a767f538e2ce3

SHA512
3091f641fe37a865b8a307592a429d4ea7034153fb7cf6e5b10e5b7af3b0d8499380fe66a747d95f7515716b9a42bad0f0a10c5cb9cd58edd05b8691d129a24e

Download Submit
memory/1760-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1760-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1760-2-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/1760-4-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1760-16-0x00000000026C0000-0x00000000026D0000-memory.dmp

Filesize
64KB

Download
memory/1760-14-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2012-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2012-19-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2012-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download