b99f6fb040a3d0e6f4462f5d3c57553066a5821c097f4f3e2706ed4ccc69c61e

Analysis

max time kernel
147s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20230824-en
resource tags

arch:x64arch:x86image:win10v2004-20230824-enlocale:en-usos:windows10-2004-x64system
submitted
29/08/2023, 15:39

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General

Target

ce49a2acb39c49bfb81017ccdd4db2ea_cryptolocker_JC.exe
Size

80KB
MD5

ce49a2acb39c49bfb81017ccdd4db2ea
SHA1

d6019072d9452e0573f0c8688a55707784fb1379
SHA256

b99f6fb040a3d0e6f4462f5d3c57553066a5821c097f4f3e2706ed4ccc69c61e
SHA512

887c29f8e37a59d4d93806e1e26b84fb137b28d5b316363a5ec66e5697d8201d31486830dd0a0c724d86c3fb539acb3ec8bdacebc7d7fb457f6be6f6ac06007a
SSDEEP

768:qkmnjFom/kLyMro2GtOOtEvwDpjeY10Y/YMsvlMdwPK80GQuchoIn:qkmnpomddpMOtEvwDpjJGYQbN/PKwMn

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3888	asih.exe

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/884-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x000600000002302c-14.dat	upx
behavioral2/files/0x000600000002302c-18.dat	upx
behavioral2/files/0x000600000002302c-19.dat	upx
behavioral2/memory/884-26-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/3888-33-0x0000000000500000-0x000000000050F000-memory.dmp	upx

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{C1DA2D26-729C-41F5-AB7D-E1AA347DCD87}.catalogItem	svchost.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 884 wrote to memory of 3888	884	ce49a2acb39c49bfb81017ccdd4db2ea_cryptolocker_JC.exe	86
PID 884 wrote to memory of 3888	884	ce49a2acb39c49bfb81017ccdd4db2ea_cryptolocker_JC.exe	86
PID 884 wrote to memory of 3888	884	ce49a2acb39c49bfb81017ccdd4db2ea_cryptolocker_JC.exe	86

C:\Users\Admin\AppData\Local\Temp\ce49a2acb39c49bfb81017ccdd4db2ea_cryptolocker_JC.exe
"C:\Users\Admin\AppData\Local\Temp\ce49a2acb39c49bfb81017ccdd4db2ea_cryptolocker_JC.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:884
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3888

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p
1⤵
- Drops file in System32 directory
PID:5060

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

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

Filesize
80KB

MD5
7f312900056092dbc12a71374717b3fe

SHA1
2961995398acf867f1e45593881619d3611db653

SHA256
5265c07398406f94d876f4457550520a08ebbd40a1c51db5d6998c16101aca00

SHA512
c67083ee6afaeb5d1578c6e33f1e00332e57f008248d20e92c8bdc7b5050b7b32f779815afc0ed309a56efdc47fdf48f426312ec41311cec57e8e58121bef0fb

Download Submit
C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
80KB

MD5
7f312900056092dbc12a71374717b3fe

SHA1
2961995398acf867f1e45593881619d3611db653

SHA256
5265c07398406f94d876f4457550520a08ebbd40a1c51db5d6998c16101aca00

SHA512
c67083ee6afaeb5d1578c6e33f1e00332e57f008248d20e92c8bdc7b5050b7b32f779815afc0ed309a56efdc47fdf48f426312ec41311cec57e8e58121bef0fb

Download Submit
C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
80KB

MD5
7f312900056092dbc12a71374717b3fe

SHA1
2961995398acf867f1e45593881619d3611db653

SHA256
5265c07398406f94d876f4457550520a08ebbd40a1c51db5d6998c16101aca00

SHA512
c67083ee6afaeb5d1578c6e33f1e00332e57f008248d20e92c8bdc7b5050b7b32f779815afc0ed309a56efdc47fdf48f426312ec41311cec57e8e58121bef0fb

Download Submit
memory/884-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/884-2-0x00000000007E0000-0x00000000007E6000-memory.dmp

Filesize
24KB

Download
memory/884-3-0x00000000007E0000-0x00000000007E6000-memory.dmp

Filesize
24KB

Download
memory/884-4-0x0000000000800000-0x0000000000806000-memory.dmp

Filesize
24KB

Download
memory/884-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3888-23-0x0000000000650000-0x0000000000656000-memory.dmp

Filesize
24KB

Download
memory/3888-24-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/3888-33-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download