c7fa99cc822d14f4a2318c8eef415641e4102ff065db971da00cfce9f540568e

General

Target

ÿոdocx.exe
Size

56KB
MD5

53bd8b97c02d09b92f8508108e788e4e
SHA1

1c0c87df4e56d667047e51838b57ed0f792608d8
SHA256

889ec7d82299313b7665d062df39c1158361308582fed001661fc469347ceefa
SHA512

198471e3eb1a8c89da9b8401b3316fe4f60eb454e573bdc665cf0668fa3035d14a3ef0ee7915b073fe1bdd6892ac635a3fe55ce96b38ebbe9cff8ebe3d76962c
SSDEEP

768:0MTeJfcWsPRIOKcGlO/qR13Clrs8qj2DGI2:07JNmRbWMkYsADF

Score

10^/10

evasion trojan

Malware Config

Signatures

UAC bypass 3 TTPs 6 IoCs

evasion trojan

Bypass User Account Control

T1088

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

ÿոdocx.exeÿոdocx.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	ÿոdocx.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	ÿոdocx.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	ÿոdocx.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	ÿոdocx.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	ÿոdocx.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	ÿոdocx.exe

Downloads MZ/PE file
Executes dropped EXE 4 IoCs

Processes:

k4.exek4.exek4.exek4.exe

pid process

2544 k4.exe
3536 k4.exe
2544 k4.exe
3536 k4.exe

pid	process
2544	k4.exe
3536	k4.exe
2544	k4.exe
3536	k4.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

ÿոdocx.exeÿոdocx.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	ÿոdocx.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	ÿոdocx.exe

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

System Information Discovery
T1082

Checks SCSI registry key(s) 3 TTPs 4 IoCs

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

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

k4.exek4.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_DADY&PROD_HARDDISK\4&215468A5&0&000000	k4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CDROM&VEN_DADY&PROD_DADY_DVD-ROM\4&215468A5&0&010000	k4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_DADY&PROD_HARDDISK\4&215468A5&0&000000	k4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CDROM&VEN_DADY&PROD_DADY_DVD-ROM\4&215468A5&0&010000	k4.exe

Kills process with taskkill 2 IoCs
evasion

Processes:

taskkill.exetaskkill.exe

pid process

2932 taskkill.exe
2932 taskkill.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

taskkill.exetaskkill.exe

description pid process

Token: SeDebugPrivilege 2932 taskkill.exe
Token: SeDebugPrivilege 2932 taskkill.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

ÿոdocx.exeÿոdocx.exe

pid process

4444 ÿոdocx.exe
4444 ÿոdocx.exe

pid	process
2932	taskkill.exe
2932	taskkill.exe

description	pid	process
Token: SeDebugPrivilege	2932	taskkill.exe
Token: SeDebugPrivilege	2932	taskkill.exe

pid	process
4444	ÿոdocx.exe
4444	ÿոdocx.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

ÿոdocx.execmd.exeÿոdocx.execmd.exe

description	pid	process	target process
PID 4444 wrote to memory of 2544	4444	ÿոdocx.exe	k4.exe
PID 4444 wrote to memory of 2544	4444	ÿոdocx.exe	k4.exe
PID 4444 wrote to memory of 3536	4444	ÿոdocx.exe	k4.exe
PID 4444 wrote to memory of 3536	4444	ÿոdocx.exe	k4.exe
PID 4444 wrote to memory of 5084	4444	ÿոdocx.exe	cmd.exe
PID 4444 wrote to memory of 5084	4444	ÿոdocx.exe	cmd.exe
PID 4444 wrote to memory of 5084	4444	ÿոdocx.exe	cmd.exe
PID 5084 wrote to memory of 2932	5084	cmd.exe	taskkill.exe
PID 5084 wrote to memory of 2932	5084	cmd.exe	taskkill.exe
PID 5084 wrote to memory of 2932	5084	cmd.exe	taskkill.exe
PID 4444 wrote to memory of 2544	4444	ÿոdocx.exe	k4.exe
PID 4444 wrote to memory of 2544	4444	ÿոdocx.exe	k4.exe
PID 4444 wrote to memory of 3536	4444	ÿոdocx.exe	k4.exe
PID 4444 wrote to memory of 3536	4444	ÿոdocx.exe	k4.exe
PID 4444 wrote to memory of 5084	4444	ÿոdocx.exe	cmd.exe
PID 4444 wrote to memory of 5084	4444	ÿոdocx.exe	cmd.exe
PID 4444 wrote to memory of 5084	4444	ÿոdocx.exe	cmd.exe
PID 5084 wrote to memory of 2932	5084	cmd.exe	taskkill.exe
PID 5084 wrote to memory of 2932	5084	cmd.exe	taskkill.exe
PID 5084 wrote to memory of 2932	5084	cmd.exe	taskkill.exe

System policy modification 1 TTPs 6 IoCs

evasion

Modify Registry

T1112

Processes:

ÿոdocx.exeÿոdocx.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	ÿոdocx.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	ÿոdocx.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	ÿոdocx.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	ÿոdocx.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	ÿոdocx.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	ÿոdocx.exe

C:\Users\Admin\AppData\Local\Temp\ÿոdocx.exe
"C:\Users\Admin\AppData\Local\Temp\ÿոdocx.exe"
1⤵
- UAC bypass
- Checks whether UAC is enabled
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
PID:4444

C:\Users\Public\Documents\k4.exe
C:/Users/Public/Documents/k4.exe
2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
PID:2544

C:\Users\Public\Documents\k4.exe
C:/Users/Public/Documents/k4.exe /D
2⤵
- Executes dropped EXE
PID:3536

C:\Windows\SysWOW64\cmd.exe
cmd.exe /c taskkill /f /t /im k4.exe
2⤵
- Suspicious use of WriteProcessMemory
PID:5084

C:\Windows\SysWOW64\taskkill.exe
taskkill /f /t /im k4.exe
3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2932

C:\Users\Admin\AppData\Local\Temp\ÿոdocx.exe
"C:\Users\Admin\AppData\Local\Temp\ÿոdocx.exe"
1⤵
- UAC bypass
- Checks whether UAC is enabled
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
PID:4444

C:\Users\Public\Documents\k4.exe
C:/Users/Public/Documents/k4.exe
2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
PID:2544

C:\Users\Public\Documents\k4.exe
C:/Users/Public/Documents/k4.exe /D
2⤵
- Executes dropped EXE
PID:3536

C:\Windows\SysWOW64\cmd.exe
cmd.exe /c taskkill /f /t /im k4.exe
2⤵
- Suspicious use of WriteProcessMemory
PID:5084

C:\Windows\SysWOW64\taskkill.exe
taskkill /f /t /im k4.exe
3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2932

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Bypass User Account Control

1

T1088

Defense Evasion

Bypass User Account Control

1

T1088

Disabling Security Tools

1

T1089

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

3

T1082

Query Registry

1

T1012

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Public\Documents\k4.exe
Filesize
892KB

MD5
33e29221e2825001d32f78632217d250

SHA1
9122127fc91790a1edb78003e9b58a9b00355ed5

SHA256
65d0b20a4dc4911fbb91683eb6488d3d3493fa4584bbdfb4e942f203bef0030d

SHA512
01d5c6ded3a83d81371e94fefb1debabb1d003c86ab3cf7145d28fb15fcfd4f8b763f6711f99c5afd9bf90f02a7af993efa5945d4f8bb6a3649b5fd86414ae93

Download Submit
C:\Users\Public\Documents\k4.exe
Filesize
892KB

MD5
33e29221e2825001d32f78632217d250

SHA1
9122127fc91790a1edb78003e9b58a9b00355ed5

SHA256
65d0b20a4dc4911fbb91683eb6488d3d3493fa4584bbdfb4e942f203bef0030d

SHA512
01d5c6ded3a83d81371e94fefb1debabb1d003c86ab3cf7145d28fb15fcfd4f8b763f6711f99c5afd9bf90f02a7af993efa5945d4f8bb6a3649b5fd86414ae93

Download Submit
C:\Users\Public\Documents\k4.exe
Filesize
892KB

MD5
33e29221e2825001d32f78632217d250

SHA1
9122127fc91790a1edb78003e9b58a9b00355ed5

SHA256
65d0b20a4dc4911fbb91683eb6488d3d3493fa4584bbdfb4e942f203bef0030d

SHA512
01d5c6ded3a83d81371e94fefb1debabb1d003c86ab3cf7145d28fb15fcfd4f8b763f6711f99c5afd9bf90f02a7af993efa5945d4f8bb6a3649b5fd86414ae93

Download Submit
C:\Users\Public\Documents\k4.exe
Filesize
892KB

MD5
33e29221e2825001d32f78632217d250

SHA1
9122127fc91790a1edb78003e9b58a9b00355ed5

SHA256
65d0b20a4dc4911fbb91683eb6488d3d3493fa4584bbdfb4e942f203bef0030d

SHA512
01d5c6ded3a83d81371e94fefb1debabb1d003c86ab3cf7145d28fb15fcfd4f8b763f6711f99c5afd9bf90f02a7af993efa5945d4f8bb6a3649b5fd86414ae93

Download Submit
C:\Users\Public\Documents\k4.exe
Filesize
892KB

MD5
33e29221e2825001d32f78632217d250

SHA1
9122127fc91790a1edb78003e9b58a9b00355ed5

SHA256
65d0b20a4dc4911fbb91683eb6488d3d3493fa4584bbdfb4e942f203bef0030d

SHA512
01d5c6ded3a83d81371e94fefb1debabb1d003c86ab3cf7145d28fb15fcfd4f8b763f6711f99c5afd9bf90f02a7af993efa5945d4f8bb6a3649b5fd86414ae93

Download Submit
C:\Users\Public\Documents\k4.exe
Filesize
892KB

MD5
33e29221e2825001d32f78632217d250

SHA1
9122127fc91790a1edb78003e9b58a9b00355ed5

SHA256
65d0b20a4dc4911fbb91683eb6488d3d3493fa4584bbdfb4e942f203bef0030d

SHA512
01d5c6ded3a83d81371e94fefb1debabb1d003c86ab3cf7145d28fb15fcfd4f8b763f6711f99c5afd9bf90f02a7af993efa5945d4f8bb6a3649b5fd86414ae93

Download Submit
memory/2544-132-0x0000000000000000-mapping.dmp

Download
memory/2544-132-0x0000000000000000-mapping.dmp

Download
memory/2932-138-0x0000000000000000-mapping.dmp

Download
memory/2932-138-0x0000000000000000-mapping.dmp

Download
memory/3536-135-0x0000000000000000-mapping.dmp

Download
memory/3536-135-0x0000000000000000-mapping.dmp

Download
memory/5084-137-0x0000000000000000-mapping.dmp

Download
memory/5084-137-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads