8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2

Analysis

max time kernel
194s
max time network
207s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
03-12-2022 17:43

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General

Target

8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe
Size

160KB
MD5

ca73767276aa325dfb65f2827d78bbda
SHA1

2a50e86030cd67326c1d616446927996cc18316c
SHA256

8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2
SHA512

15cd1fbd774d6fd87b1339e60aa385dd1634e4e172dc42eeba544c962c84af2f87272bd010e63bee16a97ff8d8b04b3c50105fc441e3cb2e281e7f52ad00b4b1
SSDEEP

3072:iNlti5raoBFfnOUOKgYyUP/ljCd6TssGB2DM:irti5r9O17Yttjk6Tb82I

Score

10^/10

bootkit evasion persistence

Malware Config

Signatures

Modifies firewall policy service 2 TTPs 2 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

description	ioc	Process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Users\Public\WIN-5425-2813-7119\puthead.exe = "C:\\Users\\Public\\WIN-5425-2813-7119\\puthead.exe:*:Enabled:Java Update Manager"	8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe

Executes dropped EXE 3 IoCs

pid	Process
1484	puthead.exe
1036	puthead.exe
1372	puthead.exe

Loads dropped DLL 2 IoCs

pid	Process
1076	8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe
1076	8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\	8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\Java Update Manager = "C:\\Users\\Public\\WIN-5425-2813-7119\\puthead.exe"	8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe

Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1067

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe
File opened for modification	\??\PhysicalDrive0	puthead.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1296 set thread context of 1700	1296	8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe	28
PID 1700 set thread context of 1076	1700	8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe	29
PID 1484 set thread context of 1036	1484	puthead.exe	31
PID 1036 set thread context of 1372	1036	puthead.exe	32

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

System Information Discovery
T1082

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1296	8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe
1700	8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe
1484	puthead.exe
1036	puthead.exe

Suspicious use of WriteProcessMemory 40 IoCs

description	pid	Process	procid_target
PID 1296 wrote to memory of 1700	1296	8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe	28
PID 1296 wrote to memory of 1700	1296	8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe	28
PID 1296 wrote to memory of 1700	1296	8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe	28
PID 1296 wrote to memory of 1700	1296	8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe	28
PID 1296 wrote to memory of 1700	1296	8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe	28
PID 1296 wrote to memory of 1700	1296	8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe	28
PID 1296 wrote to memory of 1700	1296	8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe	28
PID 1296 wrote to memory of 1700	1296	8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe	28
PID 1296 wrote to memory of 1700	1296	8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe	28
PID 1700 wrote to memory of 1076	1700	8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe	29
PID 1700 wrote to memory of 1076	1700	8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe	29
PID 1700 wrote to memory of 1076	1700	8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe	29
PID 1700 wrote to memory of 1076	1700	8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe	29
PID 1700 wrote to memory of 1076	1700	8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe	29
PID 1700 wrote to memory of 1076	1700	8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe	29
PID 1700 wrote to memory of 1076	1700	8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe	29
PID 1700 wrote to memory of 1076	1700	8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe	29
PID 1700 wrote to memory of 1076	1700	8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe	29
PID 1076 wrote to memory of 1484	1076	8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe	30
PID 1076 wrote to memory of 1484	1076	8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe	30
PID 1076 wrote to memory of 1484	1076	8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe	30
PID 1076 wrote to memory of 1484	1076	8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe	30
PID 1484 wrote to memory of 1036	1484	puthead.exe	31
PID 1484 wrote to memory of 1036	1484	puthead.exe	31
PID 1484 wrote to memory of 1036	1484	puthead.exe	31
PID 1484 wrote to memory of 1036	1484	puthead.exe	31
PID 1484 wrote to memory of 1036	1484	puthead.exe	31
PID 1484 wrote to memory of 1036	1484	puthead.exe	31
PID 1484 wrote to memory of 1036	1484	puthead.exe	31
PID 1484 wrote to memory of 1036	1484	puthead.exe	31
PID 1484 wrote to memory of 1036	1484	puthead.exe	31
PID 1036 wrote to memory of 1372	1036	puthead.exe	32
PID 1036 wrote to memory of 1372	1036	puthead.exe	32
PID 1036 wrote to memory of 1372	1036	puthead.exe	32
PID 1036 wrote to memory of 1372	1036	puthead.exe	32
PID 1036 wrote to memory of 1372	1036	puthead.exe	32
PID 1036 wrote to memory of 1372	1036	puthead.exe	32
PID 1036 wrote to memory of 1372	1036	puthead.exe	32
PID 1036 wrote to memory of 1372	1036	puthead.exe	32
PID 1036 wrote to memory of 1372	1036	puthead.exe	32

C:\Users\Admin\AppData\Local\Temp\8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe
"C:\Users\Admin\AppData\Local\Temp\8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1296
- C:\Users\Admin\AppData\Local\Temp\8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe
  "C:\Users\Admin\AppData\Local\Temp\8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe"
  2⤵
  - Writes to the Master Boot Record (MBR)
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1700
- - C:\Users\Admin\AppData\Local\Temp\8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe
    "C:\Users\Admin\AppData\Local\Temp\8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2.exe"
    3⤵
    - Modifies firewall policy service
    - Loads dropped DLL
    - Adds Run key to start application
    - Suspicious use of WriteProcessMemory
    PID:1076
  - - C:\Users\Public\WIN-5425-2813-7119\puthead.exe
      "C:\Users\Public\WIN-5425-2813-7119\puthead.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:1484
    - - C:\Users\Public\WIN-5425-2813-7119\puthead.exe
        
        "C:\Users\Public\WIN-5425-2813-7119\puthead.exe"
        5⤵
        Executes dropped EXE
        Writes to the Master Boot Record (MBR)
        Suspicious use of SetThreadContext
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:1036
      - C:\Users\Public\WIN-5425-2813-7119\puthead.exe
        
        "C:\Users\Public\WIN-5425-2813-7119\puthead.exe"
        6⤵
        Executes dropped EXE
        
        PID:1372

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Bootkit

T1067

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Public\WIN-5425-2813-7119\puthead.exe

Filesize
160KB

MD5
ca73767276aa325dfb65f2827d78bbda

SHA1
2a50e86030cd67326c1d616446927996cc18316c

SHA256
8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2

SHA512
15cd1fbd774d6fd87b1339e60aa385dd1634e4e172dc42eeba544c962c84af2f87272bd010e63bee16a97ff8d8b04b3c50105fc441e3cb2e281e7f52ad00b4b1

Download Submit
C:\Users\Public\WIN-5425-2813-7119\puthead.exe

Filesize
160KB

MD5
ca73767276aa325dfb65f2827d78bbda

SHA1
2a50e86030cd67326c1d616446927996cc18316c

SHA256
8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2

SHA512
15cd1fbd774d6fd87b1339e60aa385dd1634e4e172dc42eeba544c962c84af2f87272bd010e63bee16a97ff8d8b04b3c50105fc441e3cb2e281e7f52ad00b4b1

Download Submit
C:\Users\Public\WIN-5425-2813-7119\puthead.exe

Filesize
160KB

MD5
ca73767276aa325dfb65f2827d78bbda

SHA1
2a50e86030cd67326c1d616446927996cc18316c

SHA256
8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2

SHA512
15cd1fbd774d6fd87b1339e60aa385dd1634e4e172dc42eeba544c962c84af2f87272bd010e63bee16a97ff8d8b04b3c50105fc441e3cb2e281e7f52ad00b4b1

Download Submit
C:\Users\Public\WIN-5425-2813-7119\puthead.exe

Filesize
160KB

MD5
ca73767276aa325dfb65f2827d78bbda

SHA1
2a50e86030cd67326c1d616446927996cc18316c

SHA256
8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2

SHA512
15cd1fbd774d6fd87b1339e60aa385dd1634e4e172dc42eeba544c962c84af2f87272bd010e63bee16a97ff8d8b04b3c50105fc441e3cb2e281e7f52ad00b4b1

Download Submit
\Users\Public\WIN-5425-2813-7119\puthead.exe

Filesize
160KB

MD5
ca73767276aa325dfb65f2827d78bbda

SHA1
2a50e86030cd67326c1d616446927996cc18316c

SHA256
8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2

SHA512
15cd1fbd774d6fd87b1339e60aa385dd1634e4e172dc42eeba544c962c84af2f87272bd010e63bee16a97ff8d8b04b3c50105fc441e3cb2e281e7f52ad00b4b1

Download Submit
\Users\Public\WIN-5425-2813-7119\puthead.exe

Filesize
160KB

MD5
ca73767276aa325dfb65f2827d78bbda

SHA1
2a50e86030cd67326c1d616446927996cc18316c

SHA256
8ee7726626f37d079e212a02fd5c2cb60085329de044b7c334596eb0e152d0c2

SHA512
15cd1fbd774d6fd87b1339e60aa385dd1634e4e172dc42eeba544c962c84af2f87272bd010e63bee16a97ff8d8b04b3c50105fc441e3cb2e281e7f52ad00b4b1

Download Submit
memory/1036-115-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1076-80-0x00000000756B1000-0x00000000756B3000-memory.dmp

Filesize
8KB

Download
memory/1076-70-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/1076-69-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/1076-76-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/1076-72-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/1076-74-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/1076-81-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/1076-82-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/1296-56-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/1296-66-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/1372-118-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/1484-89-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/1484-101-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/1700-79-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1700-63-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1700-60-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1700-58-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1700-57-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads