tofsee | 368d36e214d321633cc73d84c3bd8879bb9ced7ccb906fee4657c585a11551b5

General

Target

1ecce7b894fc2132b3e7ec1c2681936d_JaffaCakes118.exe
Size

11.3MB
MD5

1ecce7b894fc2132b3e7ec1c2681936d
SHA1

d5f945e66f9d569636fa19a9a82232a6ed198859
SHA256

368d36e214d321633cc73d84c3bd8879bb9ced7ccb906fee4657c585a11551b5
SHA512

6aab60798b0256e19e145267394196e6f029d2e8ff1994e4c0efb82379fda34ec11dcc43d1b4fac9d065eb8e80eeb891a25abd82c3c71d017b4806eee331dc78
SSDEEP

49152:jGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGX:

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
3160	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\ohskcnab\ImagePath = "C:\\Windows\\SysWOW64\\ohskcnab\\nqjrprzj.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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	1ecce7b894fc2132b3e7ec1c2681936d_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
1956	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
396	nqjrprzj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 396 set thread context of 1956	396	nqjrprzj.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
3592	sc.exe
1028	sc.exe
3944	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3904	1624	WerFault.exe	81
4948	396	WerFault.exe	95

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	1ecce7b894fc2132b3e7ec1c2681936d_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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nqjrprzj.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	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1624 wrote to memory of 924	1624	1ecce7b894fc2132b3e7ec1c2681936d_JaffaCakes118.exe	85
PID 1624 wrote to memory of 924	1624	1ecce7b894fc2132b3e7ec1c2681936d_JaffaCakes118.exe	85
PID 1624 wrote to memory of 924	1624	1ecce7b894fc2132b3e7ec1c2681936d_JaffaCakes118.exe	85
PID 1624 wrote to memory of 3480	1624	1ecce7b894fc2132b3e7ec1c2681936d_JaffaCakes118.exe	87
PID 1624 wrote to memory of 3480	1624	1ecce7b894fc2132b3e7ec1c2681936d_JaffaCakes118.exe	87
PID 1624 wrote to memory of 3480	1624	1ecce7b894fc2132b3e7ec1c2681936d_JaffaCakes118.exe	87
PID 1624 wrote to memory of 3944	1624	1ecce7b894fc2132b3e7ec1c2681936d_JaffaCakes118.exe	89
PID 1624 wrote to memory of 3944	1624	1ecce7b894fc2132b3e7ec1c2681936d_JaffaCakes118.exe	89
PID 1624 wrote to memory of 3944	1624	1ecce7b894fc2132b3e7ec1c2681936d_JaffaCakes118.exe	89
PID 1624 wrote to memory of 3592	1624	1ecce7b894fc2132b3e7ec1c2681936d_JaffaCakes118.exe	91
PID 1624 wrote to memory of 3592	1624	1ecce7b894fc2132b3e7ec1c2681936d_JaffaCakes118.exe	91
PID 1624 wrote to memory of 3592	1624	1ecce7b894fc2132b3e7ec1c2681936d_JaffaCakes118.exe	91
PID 1624 wrote to memory of 1028	1624	1ecce7b894fc2132b3e7ec1c2681936d_JaffaCakes118.exe	93
PID 1624 wrote to memory of 1028	1624	1ecce7b894fc2132b3e7ec1c2681936d_JaffaCakes118.exe	93
PID 1624 wrote to memory of 1028	1624	1ecce7b894fc2132b3e7ec1c2681936d_JaffaCakes118.exe	93
PID 1624 wrote to memory of 3160	1624	1ecce7b894fc2132b3e7ec1c2681936d_JaffaCakes118.exe	96
PID 1624 wrote to memory of 3160	1624	1ecce7b894fc2132b3e7ec1c2681936d_JaffaCakes118.exe	96
PID 1624 wrote to memory of 3160	1624	1ecce7b894fc2132b3e7ec1c2681936d_JaffaCakes118.exe	96
PID 396 wrote to memory of 1956	396	nqjrprzj.exe	102
PID 396 wrote to memory of 1956	396	nqjrprzj.exe	102
PID 396 wrote to memory of 1956	396	nqjrprzj.exe	102
PID 396 wrote to memory of 1956	396	nqjrprzj.exe	102
PID 396 wrote to memory of 1956	396	nqjrprzj.exe	102

C:\Users\Admin\AppData\Local\Temp\1ecce7b894fc2132b3e7ec1c2681936d_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\1ecce7b894fc2132b3e7ec1c2681936d_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1624
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ohskcnab\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:924
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nqjrprzj.exe" C:\Windows\SysWOW64\ohskcnab\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3480
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ohskcnab binPath= "C:\Windows\SysWOW64\ohskcnab\nqjrprzj.exe /d\"C:\Users\Admin\AppData\Local\Temp\1ecce7b894fc2132b3e7ec1c2681936d_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3944
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ohskcnab "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3592
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ohskcnab
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1028
- 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:3160
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1624 -s 1408
  2⤵
  - Program crash
  PID:3904

C:\Windows\SysWOW64\ohskcnab\nqjrprzj.exe
C:\Windows\SysWOW64\ohskcnab\nqjrprzj.exe /d"C:\Users\Admin\AppData\Local\Temp\1ecce7b894fc2132b3e7ec1c2681936d_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:396
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1956
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 396 -s 560
  2⤵
  - Program crash
  PID:4948

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 1624 -ip 1624
1⤵
PID:3024

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 396 -ip 396
1⤵
PID:4584

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\nqjrprzj.exe

Filesize
14.2MB

MD5
2f5bacadab76c36b35b11da7be4720d7

SHA1
f1b923aeef343287b27e239895538ab6b766c1c1

SHA256
10a5eaa2d1ed1387273897d07acd58ba4b2ecd03ef64999ffe9019659c2028e1

SHA512
caeddc343c373376e9b3f3cc8914adee4019e47cbbef663322335eec4e45906ee7bee51e10b802a40fa4d720e1376a540bf2432c2e2c4b909b918629cb48fa4d

Download Submit
memory/396-13-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/396-12-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/396-11-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/396-19-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/1624-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1624-2-0x00000000005A0000-0x00000000005B3000-memory.dmp

Filesize
76KB

Download
memory/1624-8-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/1624-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1624-9-0x00000000005A0000-0x00000000005B3000-memory.dmp

Filesize
76KB

Download
memory/1624-1-0x00000000007C0000-0x00000000008C0000-memory.dmp

Filesize
1024KB

Download
memory/1956-14-0x00000000012F0000-0x0000000001305000-memory.dmp

Filesize
84KB

Download
memory/1956-16-0x00000000012F0000-0x0000000001305000-memory.dmp

Filesize
84KB

Download
memory/1956-17-0x00000000012F0000-0x0000000001305000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads