tofsee | 255f7c2f55efdb1e69fabbad4a24d8156c7d66964c6b1257a08bf76d241fa33f

General

Target

80e345d808b560e868c6644e64eeb241_JaffaCakes118.exe
Size

13.6MB
MD5

80e345d808b560e868c6644e64eeb241
SHA1

c9eeb020e47b0e3afadaf06a0216e1bfeb4a9e36
SHA256

255f7c2f55efdb1e69fabbad4a24d8156c7d66964c6b1257a08bf76d241fa33f
SHA512

6304515800e9e9a662399dea3cb99ce67fb950408d3ba1a3c826978f2f2c6ac0118db24a4cfd3e9169f598c1fe033e8eb470c747edf7eaab42db5750ca2d3bf1
SSDEEP

98304:fJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJ9:

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Tofsee family
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
4644	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\aymqjgb\ImagePath = "C:\\Windows\\SysWOW64\\aymqjgb\\ultrbwdr.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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	80e345d808b560e868c6644e64eeb241_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
1460	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1040	ultrbwdr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1040 set thread context of 1460	1040	ultrbwdr.exe	106

Launches sc.exe 3 IoCs

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

pid	Process
3820	sc.exe
1072	sc.exe
3520	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4356	1872	WerFault.exe	83
1576	1040	WerFault.exe	100

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	80e345d808b560e868c6644e64eeb241_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ultrbwdr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1872 wrote to memory of 1472	1872	80e345d808b560e868c6644e64eeb241_JaffaCakes118.exe	87
PID 1872 wrote to memory of 1472	1872	80e345d808b560e868c6644e64eeb241_JaffaCakes118.exe	87
PID 1872 wrote to memory of 1472	1872	80e345d808b560e868c6644e64eeb241_JaffaCakes118.exe	87
PID 1872 wrote to memory of 3464	1872	80e345d808b560e868c6644e64eeb241_JaffaCakes118.exe	90
PID 1872 wrote to memory of 3464	1872	80e345d808b560e868c6644e64eeb241_JaffaCakes118.exe	90
PID 1872 wrote to memory of 3464	1872	80e345d808b560e868c6644e64eeb241_JaffaCakes118.exe	90
PID 1872 wrote to memory of 3820	1872	80e345d808b560e868c6644e64eeb241_JaffaCakes118.exe	92
PID 1872 wrote to memory of 3820	1872	80e345d808b560e868c6644e64eeb241_JaffaCakes118.exe	92
PID 1872 wrote to memory of 3820	1872	80e345d808b560e868c6644e64eeb241_JaffaCakes118.exe	92
PID 1872 wrote to memory of 1072	1872	80e345d808b560e868c6644e64eeb241_JaffaCakes118.exe	94
PID 1872 wrote to memory of 1072	1872	80e345d808b560e868c6644e64eeb241_JaffaCakes118.exe	94
PID 1872 wrote to memory of 1072	1872	80e345d808b560e868c6644e64eeb241_JaffaCakes118.exe	94
PID 1872 wrote to memory of 3520	1872	80e345d808b560e868c6644e64eeb241_JaffaCakes118.exe	98
PID 1872 wrote to memory of 3520	1872	80e345d808b560e868c6644e64eeb241_JaffaCakes118.exe	98
PID 1872 wrote to memory of 3520	1872	80e345d808b560e868c6644e64eeb241_JaffaCakes118.exe	98
PID 1872 wrote to memory of 4644	1872	80e345d808b560e868c6644e64eeb241_JaffaCakes118.exe	101
PID 1872 wrote to memory of 4644	1872	80e345d808b560e868c6644e64eeb241_JaffaCakes118.exe	101
PID 1872 wrote to memory of 4644	1872	80e345d808b560e868c6644e64eeb241_JaffaCakes118.exe	101
PID 1040 wrote to memory of 1460	1040	ultrbwdr.exe	106
PID 1040 wrote to memory of 1460	1040	ultrbwdr.exe	106
PID 1040 wrote to memory of 1460	1040	ultrbwdr.exe	106
PID 1040 wrote to memory of 1460	1040	ultrbwdr.exe	106
PID 1040 wrote to memory of 1460	1040	ultrbwdr.exe	106

C:\Users\Admin\AppData\Local\Temp\80e345d808b560e868c6644e64eeb241_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\80e345d808b560e868c6644e64eeb241_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1872
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\aymqjgb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1472
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ultrbwdr.exe" C:\Windows\SysWOW64\aymqjgb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3464
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create aymqjgb binPath= "C:\Windows\SysWOW64\aymqjgb\ultrbwdr.exe /d\"C:\Users\Admin\AppData\Local\Temp\80e345d808b560e868c6644e64eeb241_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3820
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description aymqjgb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1072
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start aymqjgb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3520
- 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:4644
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1872 -s 1044
  2⤵
  - Program crash
  PID:4356

C:\Windows\SysWOW64\aymqjgb\ultrbwdr.exe
C:\Windows\SysWOW64\aymqjgb\ultrbwdr.exe /d"C:\Users\Admin\AppData\Local\Temp\80e345d808b560e868c6644e64eeb241_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1040
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1460
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1040 -s 520
  2⤵
  - Program crash
  PID:1576

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1872 -ip 1872
1⤵
PID:1952

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 1040 -ip 1040
1⤵
PID:1308

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\ultrbwdr.exe

Filesize
14.4MB

MD5
cf109f03869f0dc0cbefe0da4137eac9

SHA1
d70c5656c31f0665c4e2885c921ef07fcdf6f41d

SHA256
a9e29e0f0e34e388a3651d026b35533578d157e69fc30e1e4f503f74c3ebd9d9

SHA512
4e54465e1d000780f8df363be41b9405764b9d60c854435cc3eda61552c1b5c7d0e72eef4b395951bf374ff2bf9dcbb3e6993d3d68f1cbe4e9b4d69e5c4f2531

Download Submit
memory/1040-13-0x0000000000400000-0x00000000040F2000-memory.dmp

Filesize
60.9MB

Download
memory/1460-8-0x0000000001200000-0x0000000001215000-memory.dmp

Filesize
84KB

Download
memory/1460-14-0x0000000001200000-0x0000000001215000-memory.dmp

Filesize
84KB

Download
memory/1460-15-0x0000000001200000-0x0000000001215000-memory.dmp

Filesize
84KB

Download
memory/1872-1-0x0000000004230000-0x0000000004330000-memory.dmp

Filesize
1024KB

Download
memory/1872-2-0x0000000005E50000-0x0000000005E63000-memory.dmp

Filesize
76KB

Download
memory/1872-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1872-12-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1872-11-0x0000000005E50000-0x0000000005E63000-memory.dmp

Filesize
76KB

Download
memory/1872-10-0x0000000000400000-0x00000000040F2000-memory.dmp

Filesize
60.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads