c912bf3bd256028d28d1b13e405ebd412c5ee7e6f8306e910fbef3c6bfcc43c9

Analysis

max time kernel
6s
max time network
7s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
28-09-2024 06:14

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Reason

Machine shutdown

Report Analysis Logs

General

Target

c912bf3bd256028d28d1b13e405ebd412c5ee7e6f8306e910fbef3c6bfcc43c9N.exe
Size

177KB
MD5

f40a4a6faffea79774bdf8b9ade60c60
SHA1

ab74bb77dd0e123796930f2bef2d24d7e4c4cb04
SHA256

c912bf3bd256028d28d1b13e405ebd412c5ee7e6f8306e910fbef3c6bfcc43c9
SHA512

3d5d9560d8471d1f4465d25bd79c47201edce3641ee89809fea2fc9bc451f9ff2eb167bc39ec8b1322b1a381a7087ab95b31344b5e38b5a4c951b5dfe788c441
SSDEEP

3072:reMex5XhZInU/oCn+mFuGY0fsZwc1+f8V08IatORiGGYetUM5bZOdZW:rexxlInlE1zY0UZ51+UV08IrEhtrbZOW

Score

9^/10

defense_evasion discovery evasion persistence ransomware

Malware Config

Signatures

Modifies boot configuration data using bcdedit 1 TTPs 10 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
2056	bcdedit.exe
2764	bcdedit.exe
2728	bcdedit.exe
2112	bcdedit.exe
2780	bcdedit.exe
2896	bcdedit.exe
2900	bcdedit.exe
2916	bcdedit.exe
2976	bcdedit.exe
2312	bcdedit.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File created	C:\Windows\system32\drivers\f76d124.sys	KB00852583.exe

Enables test signing to bypass driver trust controls 1 TTPs 10 IoCs

Allows any signed driver to load without validation against a trusted certificate authority.

defense_evasion

Code Signing Policy Modification

T1553.006

pid	Process
2056	bcdedit.exe
2764	bcdedit.exe
2728	bcdedit.exe
2896	bcdedit.exe
2916	bcdedit.exe
2976	bcdedit.exe
2112	bcdedit.exe
2780	bcdedit.exe
2900	bcdedit.exe
2312	bcdedit.exe

Deletes itself 1 IoCs

pid	Process
2984	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
1608	KB00852583.exe

Loads dropped DLL 2 IoCs

pid	Process
2040	c912bf3bd256028d28d1b13e405ebd412c5ee7e6f8306e910fbef3c6bfcc43c9N.exe
2040	c912bf3bd256028d28d1b13e405ebd412c5ee7e6f8306e910fbef3c6bfcc43c9N.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\KB00852583.exe = "\"C:\\Users\\Admin\\AppData\\Roaming\\KB00852583.exe\""	c912bf3bd256028d28d1b13e405ebd412c5ee7e6f8306e910fbef3c6bfcc43c9N.exe

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	KB00852583.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c912bf3bd256028d28d1b13e405ebd412c5ee7e6f8306e910fbef3c6bfcc43c9N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
472	Process not Found

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeShutdownPrivilege	1608	KB00852583.exe

Suspicious use of WriteProcessMemory 48 IoCs

description	pid	Process	procid_target
PID 2040 wrote to memory of 1608	2040	c912bf3bd256028d28d1b13e405ebd412c5ee7e6f8306e910fbef3c6bfcc43c9N.exe	31
PID 2040 wrote to memory of 1608	2040	c912bf3bd256028d28d1b13e405ebd412c5ee7e6f8306e910fbef3c6bfcc43c9N.exe	31
PID 2040 wrote to memory of 1608	2040	c912bf3bd256028d28d1b13e405ebd412c5ee7e6f8306e910fbef3c6bfcc43c9N.exe	31
PID 2040 wrote to memory of 1608	2040	c912bf3bd256028d28d1b13e405ebd412c5ee7e6f8306e910fbef3c6bfcc43c9N.exe	31
PID 2040 wrote to memory of 2984	2040	c912bf3bd256028d28d1b13e405ebd412c5ee7e6f8306e910fbef3c6bfcc43c9N.exe	32
PID 2040 wrote to memory of 2984	2040	c912bf3bd256028d28d1b13e405ebd412c5ee7e6f8306e910fbef3c6bfcc43c9N.exe	32
PID 2040 wrote to memory of 2984	2040	c912bf3bd256028d28d1b13e405ebd412c5ee7e6f8306e910fbef3c6bfcc43c9N.exe	32
PID 2040 wrote to memory of 2984	2040	c912bf3bd256028d28d1b13e405ebd412c5ee7e6f8306e910fbef3c6bfcc43c9N.exe	32
PID 1608 wrote to memory of 2056	1608	KB00852583.exe	34
PID 1608 wrote to memory of 2056	1608	KB00852583.exe	34
PID 1608 wrote to memory of 2056	1608	KB00852583.exe	34
PID 1608 wrote to memory of 2056	1608	KB00852583.exe	34
PID 1608 wrote to memory of 2764	1608	KB00852583.exe	35
PID 1608 wrote to memory of 2764	1608	KB00852583.exe	35
PID 1608 wrote to memory of 2764	1608	KB00852583.exe	35
PID 1608 wrote to memory of 2764	1608	KB00852583.exe	35
PID 1608 wrote to memory of 2728	1608	KB00852583.exe	36
PID 1608 wrote to memory of 2728	1608	KB00852583.exe	36
PID 1608 wrote to memory of 2728	1608	KB00852583.exe	36
PID 1608 wrote to memory of 2728	1608	KB00852583.exe	36
PID 1608 wrote to memory of 2112	1608	KB00852583.exe	37
PID 1608 wrote to memory of 2112	1608	KB00852583.exe	37
PID 1608 wrote to memory of 2112	1608	KB00852583.exe	37
PID 1608 wrote to memory of 2112	1608	KB00852583.exe	37
PID 1608 wrote to memory of 2780	1608	KB00852583.exe	38
PID 1608 wrote to memory of 2780	1608	KB00852583.exe	38
PID 1608 wrote to memory of 2780	1608	KB00852583.exe	38
PID 1608 wrote to memory of 2780	1608	KB00852583.exe	38
PID 1608 wrote to memory of 2896	1608	KB00852583.exe	39
PID 1608 wrote to memory of 2896	1608	KB00852583.exe	39
PID 1608 wrote to memory of 2896	1608	KB00852583.exe	39
PID 1608 wrote to memory of 2896	1608	KB00852583.exe	39
PID 1608 wrote to memory of 2900	1608	KB00852583.exe	40
PID 1608 wrote to memory of 2900	1608	KB00852583.exe	40
PID 1608 wrote to memory of 2900	1608	KB00852583.exe	40
PID 1608 wrote to memory of 2900	1608	KB00852583.exe	40
PID 1608 wrote to memory of 2916	1608	KB00852583.exe	41
PID 1608 wrote to memory of 2916	1608	KB00852583.exe	41
PID 1608 wrote to memory of 2916	1608	KB00852583.exe	41
PID 1608 wrote to memory of 2916	1608	KB00852583.exe	41
PID 1608 wrote to memory of 2976	1608	KB00852583.exe	42
PID 1608 wrote to memory of 2976	1608	KB00852583.exe	42
PID 1608 wrote to memory of 2976	1608	KB00852583.exe	42
PID 1608 wrote to memory of 2976	1608	KB00852583.exe	42
PID 1608 wrote to memory of 2312	1608	KB00852583.exe	43
PID 1608 wrote to memory of 2312	1608	KB00852583.exe	43
PID 1608 wrote to memory of 2312	1608	KB00852583.exe	43
PID 1608 wrote to memory of 2312	1608	KB00852583.exe	43

C:\Users\Admin\AppData\Local\Temp\c912bf3bd256028d28d1b13e405ebd412c5ee7e6f8306e910fbef3c6bfcc43c9N.exe
"C:\Users\Admin\AppData\Local\Temp\c912bf3bd256028d28d1b13e405ebd412c5ee7e6f8306e910fbef3c6bfcc43c9N.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2040
- C:\Users\Admin\AppData\Roaming\KB00852583.exe
  "C:\Users\Admin\AppData\Roaming\KB00852583.exe"
  2⤵
  - Drops file in Drivers directory
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1608
- - C:\Windows\system32\bcdedit.exe
    bcdedit.exe -set TESTSIGNING ON
    3⤵
    - Modifies boot configuration data using bcdedit
    - Enables test signing to bypass driver trust controls
    PID:2056
- - C:\Windows\system32\bcdedit.exe
    bcdedit.exe -set TESTSIGNING ON
    3⤵
    - Modifies boot configuration data using bcdedit
    - Enables test signing to bypass driver trust controls
    PID:2764
- - C:\Windows\system32\bcdedit.exe
    bcdedit.exe -set TESTSIGNING ON
    3⤵
    - Modifies boot configuration data using bcdedit
    - Enables test signing to bypass driver trust controls
    PID:2728
- - C:\Windows\system32\bcdedit.exe
    bcdedit.exe -set TESTSIGNING ON
    3⤵
    - Modifies boot configuration data using bcdedit
    - Enables test signing to bypass driver trust controls
    PID:2112
- - C:\Windows\system32\bcdedit.exe
    bcdedit.exe -set TESTSIGNING ON
    3⤵
    - Modifies boot configuration data using bcdedit
    - Enables test signing to bypass driver trust controls
    PID:2780
- - C:\Windows\system32\bcdedit.exe
    bcdedit.exe -set TESTSIGNING ON
    3⤵
    - Modifies boot configuration data using bcdedit
    - Enables test signing to bypass driver trust controls
    PID:2896
- - C:\Windows\system32\bcdedit.exe
    bcdedit.exe -set TESTSIGNING ON
    3⤵
    - Modifies boot configuration data using bcdedit
    - Enables test signing to bypass driver trust controls
    PID:2900
- - C:\Windows\system32\bcdedit.exe
    bcdedit.exe -set TESTSIGNING ON
    3⤵
    - Modifies boot configuration data using bcdedit
    - Enables test signing to bypass driver trust controls
    PID:2916
- - C:\Windows\system32\bcdedit.exe
    bcdedit.exe -set TESTSIGNING ON
    3⤵
    - Modifies boot configuration data using bcdedit
    - Enables test signing to bypass driver trust controls
    PID:2976
- - C:\Windows\system32\bcdedit.exe
    bcdedit.exe -set TESTSIGNING ON
    3⤵
    - Modifies boot configuration data using bcdedit
    - Enables test signing to bypass driver trust controls
    PID:2312
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\POSD02B.tmp.BAT"
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2984

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x0
1⤵
PID:2664

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x1
1⤵
PID:2840

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Subvert Trust Controls

T1553

Code Signing Policy Modification

T1553.006

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

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Downloads

C:\Users\Admin\AppData\Local\Temp\POSD02B.tmp.BAT

Filesize
324B

MD5
a621050d5ca3b89bcae765cf6ddbfee4

SHA1
5a8d76aaae44723b46360554794381f2e84a9434

SHA256
9a75a3759d5aac2c83f4d71700f7f0052a02a768539bc423730afe88c0b294fe

SHA512
c2f41ddb5ba05cb49faf863a0ffdbd5470b3ee2d1b8acda7e3b3359210bc4baf1e26d1f47e25aeb7c48df21db4479a66ac0ef07484ca3d3ea1c13c61a6ed8448

Download Submit
\Users\Admin\AppData\Roaming\KB00852583.exe

Filesize
177KB

MD5
f40a4a6faffea79774bdf8b9ade60c60

SHA1
ab74bb77dd0e123796930f2bef2d24d7e4c4cb04

SHA256
c912bf3bd256028d28d1b13e405ebd412c5ee7e6f8306e910fbef3c6bfcc43c9

SHA512
3d5d9560d8471d1f4465d25bd79c47201edce3641ee89809fea2fc9bc451f9ff2eb167bc39ec8b1322b1a381a7087ab95b31344b5e38b5a4c951b5dfe788c441

Download Submit
memory/1608-18-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/1608-23-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/1608-21-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/1608-20-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/1608-17-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2040-12-0x00000000021C0000-0x000000000222D000-memory.dmp

Filesize
436KB

Download
memory/2040-0-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2040-16-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2040-4-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2040-3-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/2040-1-0x0000000000401000-0x0000000000402000-memory.dmp

Filesize
4KB

Download
memory/2040-2-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download

Analysis

Sharing

Errors

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads