tofsee | 8f4b04efd604dbb28fee3ee3a894d5c6fcc9e024569fdb8cd096c810cc654f0a

General

Target

ae3754b598d47295114b9d099757a2fb_JaffaCakes118.exe
Size

12.0MB
MD5

ae3754b598d47295114b9d099757a2fb
SHA1

14d4fcad293b7bdcba0d6ef3ed30874e9ea62858
SHA256

8f4b04efd604dbb28fee3ee3a894d5c6fcc9e024569fdb8cd096c810cc654f0a
SHA512

419eba1237b6fedcaa5ac27d13d7da945472b06ef4afbf9bd3700c40f55f3a269060efba1a8ea4749f879a96efde47fd0f4182c3a919417aa2f28af1d1561706
SSDEEP

12288:1Z+CaPfCIwUZwDu333333333333333333333333333333333333333333333333X:1cDPs

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
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
4224	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\kazaqhuh\ImagePath = "C:\\Windows\\SysWOW64\\kazaqhuh\\covpuanv.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	ae3754b598d47295114b9d099757a2fb_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
220	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4660	covpuanv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4660 set thread context of 220	4660	covpuanv.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
2228	sc.exe
1712	sc.exe
1564	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2776	2460	WerFault.exe	83
4768	4660	WerFault.exe	97

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	ae3754b598d47295114b9d099757a2fb_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	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	covpuanv.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2460 wrote to memory of 2084	2460	ae3754b598d47295114b9d099757a2fb_JaffaCakes118.exe	87
PID 2460 wrote to memory of 2084	2460	ae3754b598d47295114b9d099757a2fb_JaffaCakes118.exe	87
PID 2460 wrote to memory of 2084	2460	ae3754b598d47295114b9d099757a2fb_JaffaCakes118.exe	87
PID 2460 wrote to memory of 1292	2460	ae3754b598d47295114b9d099757a2fb_JaffaCakes118.exe	89
PID 2460 wrote to memory of 1292	2460	ae3754b598d47295114b9d099757a2fb_JaffaCakes118.exe	89
PID 2460 wrote to memory of 1292	2460	ae3754b598d47295114b9d099757a2fb_JaffaCakes118.exe	89
PID 2460 wrote to memory of 2228	2460	ae3754b598d47295114b9d099757a2fb_JaffaCakes118.exe	91
PID 2460 wrote to memory of 2228	2460	ae3754b598d47295114b9d099757a2fb_JaffaCakes118.exe	91
PID 2460 wrote to memory of 2228	2460	ae3754b598d47295114b9d099757a2fb_JaffaCakes118.exe	91
PID 2460 wrote to memory of 1712	2460	ae3754b598d47295114b9d099757a2fb_JaffaCakes118.exe	93
PID 2460 wrote to memory of 1712	2460	ae3754b598d47295114b9d099757a2fb_JaffaCakes118.exe	93
PID 2460 wrote to memory of 1712	2460	ae3754b598d47295114b9d099757a2fb_JaffaCakes118.exe	93
PID 2460 wrote to memory of 1564	2460	ae3754b598d47295114b9d099757a2fb_JaffaCakes118.exe	95
PID 2460 wrote to memory of 1564	2460	ae3754b598d47295114b9d099757a2fb_JaffaCakes118.exe	95
PID 2460 wrote to memory of 1564	2460	ae3754b598d47295114b9d099757a2fb_JaffaCakes118.exe	95
PID 2460 wrote to memory of 4224	2460	ae3754b598d47295114b9d099757a2fb_JaffaCakes118.exe	98
PID 2460 wrote to memory of 4224	2460	ae3754b598d47295114b9d099757a2fb_JaffaCakes118.exe	98
PID 2460 wrote to memory of 4224	2460	ae3754b598d47295114b9d099757a2fb_JaffaCakes118.exe	98
PID 4660 wrote to memory of 220	4660	covpuanv.exe	103
PID 4660 wrote to memory of 220	4660	covpuanv.exe	103
PID 4660 wrote to memory of 220	4660	covpuanv.exe	103
PID 4660 wrote to memory of 220	4660	covpuanv.exe	103
PID 4660 wrote to memory of 220	4660	covpuanv.exe	103

C:\Users\Admin\AppData\Local\Temp\ae3754b598d47295114b9d099757a2fb_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ae3754b598d47295114b9d099757a2fb_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2460
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kazaqhuh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2084
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\covpuanv.exe" C:\Windows\SysWOW64\kazaqhuh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1292
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create kazaqhuh binPath= "C:\Windows\SysWOW64\kazaqhuh\covpuanv.exe /d\"C:\Users\Admin\AppData\Local\Temp\ae3754b598d47295114b9d099757a2fb_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2228
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description kazaqhuh "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1712
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start kazaqhuh
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1564
- 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:4224
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2460 -s 1236
  2⤵
  - Program crash
  PID:2776

C:\Windows\SysWOW64\kazaqhuh\covpuanv.exe
C:\Windows\SysWOW64\kazaqhuh\covpuanv.exe /d"C:\Users\Admin\AppData\Local\Temp\ae3754b598d47295114b9d099757a2fb_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4660
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:220
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4660 -s 516
  2⤵
  - Program crash
  PID:4768

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 2460 -ip 2460
1⤵
PID:1020

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4660 -ip 4660
1⤵
PID:2056

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
12.5MB

MD5
ba739d3a9a495aadab00e7a3dfc6a891

SHA1
d01ffa5c345a07990523d0edc8da5e609f2ea5ef

SHA256
33fdaa2f6f0f502b16930972e1792ab0ab9e7bfea4c4722a5bfaf58fc8479753

SHA512
0a5c607566108c6e5c783549d3cea7ea42c1e397d72cc592e7d12909d958898d7ed5ddaab6fb10cf2f9c8cb9de7eb4dbea38dce98eb8d4541143b6cf6035d559

Download Submit
memory/220-13-0x0000000000910000-0x0000000000925000-memory.dmp

Filesize
84KB

Download
memory/220-15-0x0000000000910000-0x0000000000925000-memory.dmp

Filesize
84KB

Download
memory/220-16-0x0000000000910000-0x0000000000925000-memory.dmp

Filesize
84KB

Download
memory/2460-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2460-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2460-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2460-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2460-8-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2460-1-0x0000000000750000-0x0000000000850000-memory.dmp

Filesize
1024KB

Download
memory/4660-11-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4660-12-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/4660-18-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads