24b8232566f5ff90e1bc712a872d680369c3896d2195714460d790bd3932b167

Analysis

max time kernel
166s
max time network
174s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
28/02/2024, 15:47

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General

Target

2024-02-28_74165336293e9062da1bd425e33eac69_cryptolocker.exe
Size

49KB
MD5

74165336293e9062da1bd425e33eac69
SHA1

538ef3602f107dce7688a76e540b39e16f171769
SHA256

24b8232566f5ff90e1bc712a872d680369c3896d2195714460d790bd3932b167
SHA512

b911e3bfc68223845b7fd10dcf9abe655ee9f06758cc7dd155021d70dea429ac8a768bc63eaef6cd2cb2f866c818c534f102dd0f4c7737fc03f096759c971ecb
SSDEEP

768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05WTB52c:qmbhXDmjr5MOtEvwDpj5cDtKkQZQ6uc

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/2984-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d000000013a11-11.dat	CryptoLocker_rule2
behavioral1/memory/2984-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2644-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2984-13-0x00000000008C0000-0x00000000008D0000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2644-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/2984-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2644-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2644-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2984-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000d000000013a11-11.dat	UPX
behavioral1/memory/2984-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2644-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2644-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2644	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2984	2024-02-28_74165336293e9062da1bd425e33eac69_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 2984 wrote to memory of 2644	2984	2024-02-28_74165336293e9062da1bd425e33eac69_cryptolocker.exe	27
PID 2984 wrote to memory of 2644	2984	2024-02-28_74165336293e9062da1bd425e33eac69_cryptolocker.exe	27
PID 2984 wrote to memory of 2644	2984	2024-02-28_74165336293e9062da1bd425e33eac69_cryptolocker.exe	27
PID 2984 wrote to memory of 2644	2984	2024-02-28_74165336293e9062da1bd425e33eac69_cryptolocker.exe	27

C:\Users\Admin\AppData\Local\Temp\2024-02-28_74165336293e9062da1bd425e33eac69_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_74165336293e9062da1bd425e33eac69_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2984
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2644

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
49KB

MD5
d4088d24ec9903e24da29b0c4cc933ae

SHA1
f272791e5eff75fee9b003cc9184537bfd98bc35

SHA256
47a4fd9390867764fdf1f455f08c7412f0913533b3fc6bba4db538b7aadc3abe

SHA512
6ebf73b188666405bebe241aa9075e85a477938f16640c8b1adeb75d75daa8c57f5e959ed92a27ff50a05a72ed66688c7bd148a14e2fab77b2f9cda71bcd7563

Download Submit
memory/2644-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2644-19-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/2644-24-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/2644-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2984-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2984-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2984-3-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/2984-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2984-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2984-13-0x00000000008C0000-0x00000000008D0000-memory.dmp

Filesize
64KB

Download