c7724412a81fd3400def867f2bd763015a3c26fee6df794112a5b7c07a9c7ff7

Analysis

max time kernel
145s
max time network
151s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
16/03/2024, 10:39

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General

Target

2024-03-16_a76f75c83e66a940d4c9e57e9127bd11_cryptolocker.exe
Size

46KB
MD5

a76f75c83e66a940d4c9e57e9127bd11
SHA1

bd3627286928dafb25b6ecdd239e322f7b2cba14
SHA256

c7724412a81fd3400def867f2bd763015a3c26fee6df794112a5b7c07a9c7ff7
SHA512

43d73df335ae55987e02efd6c63ddf1e39957cd5e88eb0dac8c72de08a4d617f742b48e5b2584ffc3fac4567fd893cb483eaf2bec512999b140115b99004810a
SSDEEP

768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05W2Mo2pa:qmbhXDmjr5MOtEvwDpj5cDtKkQZQL

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2992-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000015c31-11.dat	CryptoLocker_rule2
behavioral1/memory/2940-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2992-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2940-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/2940-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2992-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2940-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2992-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000c000000015c31-11.dat	UPX
behavioral1/memory/2940-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2992-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2940-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2940	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2992	2024-03-16_a76f75c83e66a940d4c9e57e9127bd11_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 2992 wrote to memory of 2940	2992	2024-03-16_a76f75c83e66a940d4c9e57e9127bd11_cryptolocker.exe	28
PID 2992 wrote to memory of 2940	2992	2024-03-16_a76f75c83e66a940d4c9e57e9127bd11_cryptolocker.exe	28
PID 2992 wrote to memory of 2940	2992	2024-03-16_a76f75c83e66a940d4c9e57e9127bd11_cryptolocker.exe	28
PID 2992 wrote to memory of 2940	2992	2024-03-16_a76f75c83e66a940d4c9e57e9127bd11_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-16_a76f75c83e66a940d4c9e57e9127bd11_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-16_a76f75c83e66a940d4c9e57e9127bd11_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2992
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2940

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

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Downloads

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

Filesize
47KB

MD5
64bc3406ada4574fe9c6396458b2d74e

SHA1
3e2ce8fbff85bf64679dfb493388d7c5e37c73fd

SHA256
9a0db462352aa0016e6166e25dc2bf8a16718e530501c8ce78c444bdc518de2a

SHA512
4b170920fc9de77c422c1dd4d9e51aa5fd280d89d49e3e56fb35b45df7dcc75da245b05594edc30533bea168321a4579e144d6e5b477f7d0d277dd97113cb01f

Download Submit
memory/2940-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2940-20-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/2940-19-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2940-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2992-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2992-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2992-3-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2992-2-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2992-14-0x0000000002480000-0x0000000002490000-memory.dmp

Filesize
64KB

Download
memory/2992-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download