43a22394a89719a34435fecb84c20d51652a8cc13994bd31f720e73342528e7d

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
13/02/2024, 13:08

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General

Target

2024-02-13_c2549664ca1bfc8f92b6b4b7e2108a7a_cryptolocker.exe
Size

57KB
MD5

c2549664ca1bfc8f92b6b4b7e2108a7a
SHA1

d0448728fc3f3110326c7a4bccdec476811d671b
SHA256

43a22394a89719a34435fecb84c20d51652a8cc13994bd31f720e73342528e7d
SHA512

52d7650a077d16d358edcaf5bc34a5a4f39d828811d4da7ad21610e9245657bc92309fb8ae91b8cdf769e19fa184505dfd5f3948a09968db363fe2895310975d
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61PTG:BbdDmjr+OtEvwDpjMY

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/3032-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0009000000012252-11.dat	CryptoLocker_rule2
behavioral1/memory/3032-13-0x00000000020A0000-0x00000000020B0000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2128-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3032-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2128-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/2128-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3032-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2128-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

resource	yara_rule
behavioral1/memory/3032-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x0009000000012252-11.dat	UPX
behavioral1/memory/3032-13-0x00000000020A0000-0x00000000020B0000-memory.dmp	UPX
behavioral1/memory/2128-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3032-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2128-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2128	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
3032	2024-02-13_c2549664ca1bfc8f92b6b4b7e2108a7a_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 3032 wrote to memory of 2128	3032	2024-02-13_c2549664ca1bfc8f92b6b4b7e2108a7a_cryptolocker.exe	28
PID 3032 wrote to memory of 2128	3032	2024-02-13_c2549664ca1bfc8f92b6b4b7e2108a7a_cryptolocker.exe	28
PID 3032 wrote to memory of 2128	3032	2024-02-13_c2549664ca1bfc8f92b6b4b7e2108a7a_cryptolocker.exe	28
PID 3032 wrote to memory of 2128	3032	2024-02-13_c2549664ca1bfc8f92b6b4b7e2108a7a_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-13_c2549664ca1bfc8f92b6b4b7e2108a7a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-13_c2549664ca1bfc8f92b6b4b7e2108a7a_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3032
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2128

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
57KB

MD5
98a6d9bf4d66249fef3607221661488c

SHA1
db9eab97e87122c95795d96f70f52114e5ed886e

SHA256
9910a04703769eb0f58aee7246fdbcd2ce23d4f205a0f9686aac5afb1951ddb8

SHA512
6e17e0925467a96cccc2b8e7c75648b2819976f749fc26370ae1fdd1bf3ddc03111b1bc80ec34bb18d8e56f8fe5ec2dfbeb38af235d163a5b0c522c2ea326b08

Download Submit
memory/2128-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2128-19-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2128-23-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2128-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3032-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3032-1-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/3032-3-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/3032-2-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/3032-13-0x00000000020A0000-0x00000000020B0000-memory.dmp

Filesize
64KB

Download
memory/3032-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download