7b98601cdf3dc125e18217e24207a1631f3f4aa9c0c10e1c101e98801d75f595

Analysis

max time kernel
149s
max time network
49s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
19/09/2022, 06:58

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General

Target

7b98601cdf3dc125e18217e24207a1631f3f4aa9c0c10e1c101e98801d75f595.exe
Size

128KB
MD5

a4b06792bbb73e3a1a302517f7eeba6d
SHA1

f3c01fee3204bf8d2010bc92bdd1301d7e9f0d73
SHA256

7b98601cdf3dc125e18217e24207a1631f3f4aa9c0c10e1c101e98801d75f595
SHA512

593725354388af2e13fada0701c2b0343e2d0944434c0376c8fad3910a8cfbe6881b372a103ba9208b4786aadfb2114c70a33d7f53f33b8b265d9c9bb422255d
SSDEEP

3072:B0d4nDbfagCqKZk5yY/NdknZpepjBW/aWVPLQ7TjTgUtnRMr:yd4nDWgRAkPOZI/GrVPswUrA

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1920	caycwq.exe

Deletes itself 1 IoCs

pid	Process
1460	cmd.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\caycwq.exe	7b98601cdf3dc125e18217e24207a1631f3f4aa9c0c10e1c101e98801d75f595.exe
File opened for modification	C:\Windows\SysWOW64\caycwq.exe	7b98601cdf3dc125e18217e24207a1631f3f4aa9c0c10e1c101e98801d75f595.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	caycwq.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	caycwq.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1896	7b98601cdf3dc125e18217e24207a1631f3f4aa9c0c10e1c101e98801d75f595.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1896 wrote to memory of 1460	1896	7b98601cdf3dc125e18217e24207a1631f3f4aa9c0c10e1c101e98801d75f595.exe	29
PID 1896 wrote to memory of 1460	1896	7b98601cdf3dc125e18217e24207a1631f3f4aa9c0c10e1c101e98801d75f595.exe	29
PID 1896 wrote to memory of 1460	1896	7b98601cdf3dc125e18217e24207a1631f3f4aa9c0c10e1c101e98801d75f595.exe	29
PID 1896 wrote to memory of 1460	1896	7b98601cdf3dc125e18217e24207a1631f3f4aa9c0c10e1c101e98801d75f595.exe	29

C:\Users\Admin\AppData\Local\Temp\7b98601cdf3dc125e18217e24207a1631f3f4aa9c0c10e1c101e98801d75f595.exe
"C:\Users\Admin\AppData\Local\Temp\7b98601cdf3dc125e18217e24207a1631f3f4aa9c0c10e1c101e98801d75f595.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1896
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\7B9860~1.EXE > nul
  2⤵
  - Deletes itself
  PID:1460

C:\Windows\SysWOW64\caycwq.exe
C:\Windows\SysWOW64\caycwq.exe
1⤵
- Executes dropped EXE
- Checks processor information in registry
PID:1920

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\caycwq.exe

Filesize
128KB

MD5
a4b06792bbb73e3a1a302517f7eeba6d

SHA1
f3c01fee3204bf8d2010bc92bdd1301d7e9f0d73

SHA256
7b98601cdf3dc125e18217e24207a1631f3f4aa9c0c10e1c101e98801d75f595

SHA512
593725354388af2e13fada0701c2b0343e2d0944434c0376c8fad3910a8cfbe6881b372a103ba9208b4786aadfb2114c70a33d7f53f33b8b265d9c9bb422255d

Download Submit
C:\Windows\SysWOW64\caycwq.exe

Filesize
128KB

MD5
a4b06792bbb73e3a1a302517f7eeba6d

SHA1
f3c01fee3204bf8d2010bc92bdd1301d7e9f0d73

SHA256
7b98601cdf3dc125e18217e24207a1631f3f4aa9c0c10e1c101e98801d75f595

SHA512
593725354388af2e13fada0701c2b0343e2d0944434c0376c8fad3910a8cfbe6881b372a103ba9208b4786aadfb2114c70a33d7f53f33b8b265d9c9bb422255d

Download Submit
memory/1896-54-0x0000000076181000-0x0000000076183000-memory.dmp

Filesize
8KB

Download
memory/1896-55-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1896-56-0x0000000000430000-0x0000000000454000-memory.dmp

Filesize
144KB

Download
memory/1896-61-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1896-62-0x0000000000430000-0x0000000000454000-memory.dmp

Filesize
144KB

Download
memory/1920-63-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1920-64-0x00000000003A0000-0x00000000003C4000-memory.dmp

Filesize
144KB

Download
memory/1920-65-0x0000000000400000-0x0000000000430000-memory.dmp

Filesize
192KB

Download
memory/1920-66-0x00000000003A0000-0x00000000003C4000-memory.dmp

Filesize
144KB

Download