6262b83425e85d203b4708dc629987ffaa4dff8ab03042e1332b8910b5e75a85

Resubmissions

05/07/2023, 10:55

230705-m1lr8abf72 8

30/01/2022, 18:36

220130-w9ceksgdgp 8

Analysis

max time kernel
142s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
05/07/2023, 10:55

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General

Target

6262b83425e85d203b4708dc629987ffaa4dff8ab03042e1332b8910b5e75a85.dll
Size

130KB
MD5

59cb505d1636119f2881caa14bf42326
SHA1

b20e69127f2ca0ae4852c379dcd65348f01d1cc7
SHA256

6262b83425e85d203b4708dc629987ffaa4dff8ab03042e1332b8910b5e75a85
SHA512

90667a78df7946ac6b9c90175402d699b1d61bb0b6d30d565b0f7fcc326bd2fc50dcb2a8b304fdf44cb33818c82c779caa23814258c312af596947b576cd5fa3
SSDEEP

3072:C3nCOoM+XU9MCgDFulDgWh3SaHsWZndZt9wxdTXV/:0COP+XU9MCgDFuRgWnHsWyX

Score

8^/10

persistence

Malware Config

Signatures

Sets DLL path for service in the registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\helpsvc\Parameters\ServiceDll = "%Systemroot%\\System32\\Msresgjn.ttf"	regsvr32.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\helpsvc\ImagePath = "%SystemRoot%\\System32\\svchost.exe -k netsvcs"	regsvr32.exe

Loads dropped DLL 1 IoCs

pid	Process
728	regsvr32.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	\??\c:\windows\SysWOW64\Msresgjn.ttf	regsvr32.exe
File created	\??\c:\windows\SysWOW64\Msresgjn.ttf	regsvr32.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
3652	regsvr32.exe
3652	regsvr32.exe
3652	regsvr32.exe
3652	regsvr32.exe
3652	regsvr32.exe
3652	regsvr32.exe
3652	regsvr32.exe
3652	regsvr32.exe
3652	regsvr32.exe
3652	regsvr32.exe
3652	regsvr32.exe
3652	regsvr32.exe
3652	regsvr32.exe
3652	regsvr32.exe
3652	regsvr32.exe
3652	regsvr32.exe
3652	regsvr32.exe
3652	regsvr32.exe
3652	regsvr32.exe
3652	regsvr32.exe
3652	regsvr32.exe
3652	regsvr32.exe
3652	regsvr32.exe
3652	regsvr32.exe
3652	regsvr32.exe
3652	regsvr32.exe
3652	regsvr32.exe
3652	regsvr32.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	728	regsvr32.exe
Token: SeLoadDriverPrivilege	728	regsvr32.exe
Token: SeShutdownPrivilege	728	regsvr32.exe
Token: SeTcbPrivilege	728	regsvr32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4684 wrote to memory of 3652	4684	regsvr32.exe	81
PID 4684 wrote to memory of 3652	4684	regsvr32.exe	81
PID 4684 wrote to memory of 3652	4684	regsvr32.exe	81
PID 3652 wrote to memory of 728	3652	regsvr32.exe	84
PID 3652 wrote to memory of 728	3652	regsvr32.exe	84
PID 3652 wrote to memory of 728	3652	regsvr32.exe	84

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\6262b83425e85d203b4708dc629987ffaa4dff8ab03042e1332b8910b5e75a85.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:4684
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\6262b83425e85d203b4708dc629987ffaa4dff8ab03042e1332b8910b5e75a85.dll
  2⤵
  - Sets DLL path for service in the registry
  - Sets service image path in registry
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3652
- - C:\Windows\SysWOW64\regsvr32.exe
    regsvr32.exe /s /u "c:\windows\system32\Msresgjn.ttf"
    3⤵
    - Loads dropped DLL
    - Suspicious use of AdjustPrivilegeToken
    PID:728

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\Msresgjn.ttf

Filesize
130KB

MD5
59cb505d1636119f2881caa14bf42326

SHA1
b20e69127f2ca0ae4852c379dcd65348f01d1cc7

SHA256
6262b83425e85d203b4708dc629987ffaa4dff8ab03042e1332b8910b5e75a85

SHA512
90667a78df7946ac6b9c90175402d699b1d61bb0b6d30d565b0f7fcc326bd2fc50dcb2a8b304fdf44cb33818c82c779caa23814258c312af596947b576cd5fa3

Download Submit
\??\c:\windows\SysWOW64\Msresgjn.ttf

Filesize
130KB

MD5
59cb505d1636119f2881caa14bf42326

SHA1
b20e69127f2ca0ae4852c379dcd65348f01d1cc7

SHA256
6262b83425e85d203b4708dc629987ffaa4dff8ab03042e1332b8910b5e75a85

SHA512
90667a78df7946ac6b9c90175402d699b1d61bb0b6d30d565b0f7fcc326bd2fc50dcb2a8b304fdf44cb33818c82c779caa23814258c312af596947b576cd5fa3

Download Submit