a467af43cbc1ff73fb45e64a0e304bbe65c2303050224df11a96fff27dfea0e5

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
20-04-2024 20:28

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General

Target

2024-04-20_5d8178aa7427102e17e86c90d7b9cbc6_cryptolocker.exe
Size

49KB
MD5

5d8178aa7427102e17e86c90d7b9cbc6
SHA1

b36cbba5fc51e271359850507c15b0bf568287b7
SHA256

a467af43cbc1ff73fb45e64a0e304bbe65c2303050224df11a96fff27dfea0e5
SHA512

b43863b1549f6e00de5f59fb8010251793e68fd005342582fa5e2cfb9ae8e9ebe2dc80316709d85639ef66ef3062782b2cf9932e8e7d1bdbfe2dbfaddc0836e3
SSDEEP

768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05W2Mocs:qmbhXDmjr5MOtEvwDpj5cDtKkQZQh

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/2868-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000012253-11.dat	CryptoLocker_rule2
behavioral1/memory/2868-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2568-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2868-13-0x0000000000610000-0x0000000000620000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2568-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2868-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2868-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2568-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2568-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

resource	yara_rule
behavioral1/memory/2868-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000c000000012253-11.dat	UPX
behavioral1/memory/2868-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2568-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2868-13-0x0000000000610000-0x0000000000620000-memory.dmp	UPX
behavioral1/memory/2568-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2568	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2868	2024-04-20_5d8178aa7427102e17e86c90d7b9cbc6_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 2868 wrote to memory of 2568	2868	2024-04-20_5d8178aa7427102e17e86c90d7b9cbc6_cryptolocker.exe	28
PID 2868 wrote to memory of 2568	2868	2024-04-20_5d8178aa7427102e17e86c90d7b9cbc6_cryptolocker.exe	28
PID 2868 wrote to memory of 2568	2868	2024-04-20_5d8178aa7427102e17e86c90d7b9cbc6_cryptolocker.exe	28
PID 2868 wrote to memory of 2568	2868	2024-04-20_5d8178aa7427102e17e86c90d7b9cbc6_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-20_5d8178aa7427102e17e86c90d7b9cbc6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-20_5d8178aa7427102e17e86c90d7b9cbc6_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2868
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2568

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
49KB

MD5
e26504d037e3d6acdebd7ab04a96576e

SHA1
36c205f4d97fd00ef2ff22dffce06712f8214a1c

SHA256
d6c07460c6dcc16c650ca3044a63046b72817896b98fd088a177a7e257f4e83e

SHA512
ec365d6df760c28811b84adcab2bb567dddefe943f6c250a30be065edb50c18712b3c10f7572d3e39675e72b82cdf81e4b91e9e24b0333be06a96434882b4ba3

Download Submit
memory/2568-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2568-19-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/2568-26-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2568-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2868-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2868-1-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2868-2-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/2868-9-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2868-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2868-13-0x0000000000610000-0x0000000000620000-memory.dmp

Filesize
64KB

Download