tofsee | bf11cd8920154f9330b71da56340963b22b765af777e1badd3a8d604c1bcc141

Analysis

max time kernel
149s
max time network
154s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
06-10-2024 13:26

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General

Target

1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe
Size

12.8MB
MD5

1846e3f99d0485fb6d54c8f82f8898a3
SHA1

fb6e9b990100f957a922c36589b4cfffebc8ebd5
SHA256

bf11cd8920154f9330b71da56340963b22b765af777e1badd3a8d604c1bcc141
SHA512

019aeb67cb5de71ade86a9945628c8b2d7d33aa5650d314a892f3f5f851baad6ce3d405aacecdf57591f88ed804b0f75533532dfcec9aa510c7ffe08ed0eae65
SSDEEP

24576:+oGUbmtvDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD7:S9t

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

defeatwax.ru

refabyd.info

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\gkmopmtd = "0"	svchost.exe

Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2644	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\gkmopmtd\ImagePath = "C:\\Windows\\SysWOW64\\gkmopmtd\\oahbgmzh.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2640	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2748	oahbgmzh.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2748 set thread context of 2640	2748	oahbgmzh.exe	43

Launches sc.exe 3 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
2772	sc.exe
596	sc.exe
3056	sc.exe

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

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 9 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	oahbgmzh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2216 wrote to memory of 2828	2216	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	30
PID 2216 wrote to memory of 2828	2216	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	30
PID 2216 wrote to memory of 2828	2216	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	30
PID 2216 wrote to memory of 2828	2216	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	30
PID 2216 wrote to memory of 2720	2216	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	32
PID 2216 wrote to memory of 2720	2216	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	32
PID 2216 wrote to memory of 2720	2216	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	32
PID 2216 wrote to memory of 2720	2216	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	32
PID 2216 wrote to memory of 2772	2216	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	34
PID 2216 wrote to memory of 2772	2216	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	34
PID 2216 wrote to memory of 2772	2216	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	34
PID 2216 wrote to memory of 2772	2216	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	34
PID 2216 wrote to memory of 596	2216	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	36
PID 2216 wrote to memory of 596	2216	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	36
PID 2216 wrote to memory of 596	2216	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	36
PID 2216 wrote to memory of 596	2216	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	36
PID 2216 wrote to memory of 3056	2216	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	38
PID 2216 wrote to memory of 3056	2216	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	38
PID 2216 wrote to memory of 3056	2216	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	38
PID 2216 wrote to memory of 3056	2216	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	38
PID 2216 wrote to memory of 2644	2216	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	41
PID 2216 wrote to memory of 2644	2216	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	41
PID 2216 wrote to memory of 2644	2216	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	41
PID 2216 wrote to memory of 2644	2216	1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe	41
PID 2748 wrote to memory of 2640	2748	oahbgmzh.exe	43
PID 2748 wrote to memory of 2640	2748	oahbgmzh.exe	43
PID 2748 wrote to memory of 2640	2748	oahbgmzh.exe	43
PID 2748 wrote to memory of 2640	2748	oahbgmzh.exe	43
PID 2748 wrote to memory of 2640	2748	oahbgmzh.exe	43
PID 2748 wrote to memory of 2640	2748	oahbgmzh.exe	43

C:\Users\Admin\AppData\Local\Temp\1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2216
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gkmopmtd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2828
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\oahbgmzh.exe" C:\Windows\SysWOW64\gkmopmtd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2720
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create gkmopmtd binPath= "C:\Windows\SysWOW64\gkmopmtd\oahbgmzh.exe /d\"C:\Users\Admin\AppData\Local\Temp\1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2772
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description gkmopmtd "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:596
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start gkmopmtd
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3056
- C:\Windows\SysWOW64\netsh.exe
  "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
  2⤵
  - Modifies Windows Firewall
  - Event Triggered Execution: Netsh Helper DLL
  - System Location Discovery: System Language Discovery
  PID:2644

C:\Windows\SysWOW64\gkmopmtd\oahbgmzh.exe
C:\Windows\SysWOW64\gkmopmtd\oahbgmzh.exe /d"C:\Users\Admin\AppData\Local\Temp\1846e3f99d0485fb6d54c8f82f8898a3_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2748
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2640

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\oahbgmzh.exe

Filesize
13.3MB

MD5
c66a2d388ee84fad9bcc8ffb55fe759f

SHA1
d724add2b5c85824ad4322eaf0ec7d05ce9b6139

SHA256
7995629f574abcaa42b1e2999df453930f1461528cc2851bd39e93bce09297fd

SHA512
8e29da033e2d07c9177d4235aa9788c03d949ab65b24c01023268d6797ec864d65e2524d691686a706e0c4dab5578436b355265b313493a1dda677fe87dacb4c

Download Submit
memory/2216-8-0x0000000000400000-0x0000000002B8F000-memory.dmp

Filesize
39.6MB

Download
memory/2216-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2216-1-0x0000000002D50000-0x0000000002E50000-memory.dmp

Filesize
1024KB

Download
memory/2216-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2216-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2216-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2640-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2640-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2640-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2640-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2640-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2748-17-0x0000000000400000-0x0000000002B8F000-memory.dmp

Filesize
39.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads