bcfd9c451ba019e85c93d3903135fbae6420b21878559966e82896427a3070ad

Analysis

max time kernel
76s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
04-10-2022 01:24

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General

Target

bcfd9c451ba019e85c93d3903135fbae6420b21878559966e82896427a3070ad.exe
Size

48KB
MD5

08fc5b8c8cf94368ddec6e211ac96be0
SHA1

6a541d948b7f8b905b83f49c16d9ae60cf42b333
SHA256

bcfd9c451ba019e85c93d3903135fbae6420b21878559966e82896427a3070ad
SHA512

e46c98e23e4e1faf3e7810b5c16ae6f42020d16957446ae272a5a2d9bef85a17684e2c83e45e6fc913ae380a21cc02432813bc60bc5a3ed385db82e9562d6a26
SSDEEP

768:/z4aSgohU0vUxUk/0UviyFrxOWyOmQeOXJ/wETSrUpEX/i:/srbdAMUqyFFOwXJ/wETOUpm/i

Score

8^/10

discovery exploit persistence

Malware Config

Signatures

Possible privilege escalation attempt 2 IoCs
exploit

Processes:

takeown.exeicacls.exe

pid process

5076 takeown.exe
4268 icacls.exe
Modifies file permissions 1 TTPs 2 IoCs
discovery

File Permissions Modification
T1222

Processes:

takeown.exeicacls.exe

pid process

5076 takeown.exe
4268 icacls.exe

pid	process
5076	takeown.exe
4268	icacls.exe

pid	process
5076	takeown.exe
4268	icacls.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

bcfd9c451ba019e85c93d3903135fbae6420b21878559966e82896427a3070ad.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	bcfd9c451ba019e85c93d3903135fbae6420b21878559966e82896427a3070ad.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\VyIx = "c:\\windows\\system32\\wbqcm.exe"	bcfd9c451ba019e85c93d3903135fbae6420b21878559966e82896427a3070ad.exe

Drops file in System32 directory 2 IoCs

Processes:

bcfd9c451ba019e85c93d3903135fbae6420b21878559966e82896427a3070ad.exe

description	ioc	process
File created	\??\c:\windows\SysWOW64\wbqcm.exe	bcfd9c451ba019e85c93d3903135fbae6420b21878559966e82896427a3070ad.exe
File opened for modification	\??\c:\windows\SysWOW64\wbqcm.exe	bcfd9c451ba019e85c93d3903135fbae6420b21878559966e82896427a3070ad.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

bcfd9c451ba019e85c93d3903135fbae6420b21878559966e82896427a3070ad.exe

pid process

1484 bcfd9c451ba019e85c93d3903135fbae6420b21878559966e82896427a3070ad.exe

pid	process
1484	bcfd9c451ba019e85c93d3903135fbae6420b21878559966e82896427a3070ad.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

bcfd9c451ba019e85c93d3903135fbae6420b21878559966e82896427a3070ad.exe

description	pid	process	target process
PID 1484 wrote to memory of 5076	1484	bcfd9c451ba019e85c93d3903135fbae6420b21878559966e82896427a3070ad.exe	takeown.exe
PID 1484 wrote to memory of 5076	1484	bcfd9c451ba019e85c93d3903135fbae6420b21878559966e82896427a3070ad.exe	takeown.exe
PID 1484 wrote to memory of 5076	1484	bcfd9c451ba019e85c93d3903135fbae6420b21878559966e82896427a3070ad.exe	takeown.exe
PID 1484 wrote to memory of 4268	1484	bcfd9c451ba019e85c93d3903135fbae6420b21878559966e82896427a3070ad.exe	icacls.exe
PID 1484 wrote to memory of 4268	1484	bcfd9c451ba019e85c93d3903135fbae6420b21878559966e82896427a3070ad.exe	icacls.exe
PID 1484 wrote to memory of 4268	1484	bcfd9c451ba019e85c93d3903135fbae6420b21878559966e82896427a3070ad.exe	icacls.exe

C:\Users\Admin\AppData\Local\Temp\bcfd9c451ba019e85c93d3903135fbae6420b21878559966e82896427a3070ad.exe
"C:\Users\Admin\AppData\Local\Temp\bcfd9c451ba019e85c93d3903135fbae6420b21878559966e82896427a3070ad.exe"
1⤵
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1484

C:\Windows\SysWOW64\takeown.exe
C:\Windows\system32\takeown.exe /f "c:\windows\system32\wbqcm.exe"
2⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:5076

C:\Windows\SysWOW64\icacls.exe
C:\Windows\system32\icacls.exe "c:\windows\system32\wbqcm.exe" /grant Users:F
2⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:4268

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

File Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

\??\c:\windows\SysWOW64\wbqcm.exe
Filesize
48KB

MD5
08fc5b8c8cf94368ddec6e211ac96be0

SHA1
6a541d948b7f8b905b83f49c16d9ae60cf42b333

SHA256
bcfd9c451ba019e85c93d3903135fbae6420b21878559966e82896427a3070ad

SHA512
e46c98e23e4e1faf3e7810b5c16ae6f42020d16957446ae272a5a2d9bef85a17684e2c83e45e6fc913ae380a21cc02432813bc60bc5a3ed385db82e9562d6a26

Download Submit
memory/4268-135-0x0000000000000000-mapping.dmp

Download
memory/5076-134-0x0000000000000000-mapping.dmp

Download