46cb9ac341c674d9cf49a395fbdb097327979e325b5781a12a0a2ca3dc63e38d

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
27/01/2024, 01:27

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General

Target

2024-01-27_772ca6322affb9588f43f2d038e5b2df_cryptolocker.exe
Size

47KB
MD5

772ca6322affb9588f43f2d038e5b2df
SHA1

f7b6334bb694accdaa3b367cf7812b16222eeb69
SHA256

46cb9ac341c674d9cf49a395fbdb097327979e325b5781a12a0a2ca3dc63e38d
SHA512

95d78ac923eb17df630bb1792b6021ba4ed3941faef628600483df7cb25b326d828f63d348b40c7d9bdef087fa87414502fa3584304f8025c18a56bb679e86ab
SSDEEP

768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05WtyU8jL:qmbhXDmjr5MOtEvwDpj5cDtKkQZQPdUM

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2432-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x00080000000122c9-11.dat	CryptoLocker_rule2
behavioral1/memory/2432-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2344-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2344-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/2432-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2344-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2344-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2432-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x00080000000122c9-11.dat	UPX
behavioral1/memory/2432-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2344-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2344-25-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2344	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2432	2024-01-27_772ca6322affb9588f43f2d038e5b2df_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 2432 wrote to memory of 2344	2432	2024-01-27_772ca6322affb9588f43f2d038e5b2df_cryptolocker.exe	28
PID 2432 wrote to memory of 2344	2432	2024-01-27_772ca6322affb9588f43f2d038e5b2df_cryptolocker.exe	28
PID 2432 wrote to memory of 2344	2432	2024-01-27_772ca6322affb9588f43f2d038e5b2df_cryptolocker.exe	28
PID 2432 wrote to memory of 2344	2432	2024-01-27_772ca6322affb9588f43f2d038e5b2df_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-27_772ca6322affb9588f43f2d038e5b2df_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-27_772ca6322affb9588f43f2d038e5b2df_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2432
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2344

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
48KB

MD5
deea013781b560c2ad84d3a0500e4aa5

SHA1
23bfc39d6863c3e421a8c8e1730d83b35d38ffc6

SHA256
0c653808f9f07295899f40b421e96403c2ee894864509a7e458d035b1799fe95

SHA512
c0d1625abab9a07094d9cda580424151091e5bf601c83cc33df845abc89b1bcf645daffa56aadee4d870cc1db8b505aed65c4bfdf7cc48eca4313a4bd7988a13

Download Submit
memory/2344-18-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/2344-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2344-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2432-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2432-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2432-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2432-3-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2432-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download