tofsee | 1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036

General

Target

JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe
Size

305KB
MD5

3cc97570660f299ac6bfd71c41161d14
SHA1

261cd155b045aa2aa7859839d2225e5fc85862c4
SHA256

1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036
SHA512

f327fde63260752f8e69a6c2b0b775c829618165f6f088fbb9ecddc7f03df4804c0949c4f9d9f35b1cbeec0e32c9572eee017c86b3cf0814f85972cd05f46787
SSDEEP

6144:eSLXimqL97bFsmSqhxg+EApS/irarL6MCOhxxFeTr/ekI:ecXuJ7bimSI80WL6+zxF6L

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
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
2140	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\atrmezln\ImagePath = "C:\\Windows\\SysWOW64\\atrmezln\\uokqbldj.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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe

Deletes itself 1 IoCs

pid	Process
3084	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4100	uokqbldj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4100 set thread context of 3084	4100	uokqbldj.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
3584	sc.exe
1372	sc.exe
3324	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
2036	2124	WerFault.exe	81
5004	4100	WerFault.exe	92

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	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.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	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	uokqbldj.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2124 wrote to memory of 3840	2124	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	82
PID 2124 wrote to memory of 3840	2124	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	82
PID 2124 wrote to memory of 3840	2124	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	82
PID 2124 wrote to memory of 2576	2124	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	84
PID 2124 wrote to memory of 2576	2124	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	84
PID 2124 wrote to memory of 2576	2124	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	84
PID 2124 wrote to memory of 3584	2124	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	86
PID 2124 wrote to memory of 3584	2124	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	86
PID 2124 wrote to memory of 3584	2124	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	86
PID 2124 wrote to memory of 1372	2124	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	88
PID 2124 wrote to memory of 1372	2124	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	88
PID 2124 wrote to memory of 1372	2124	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	88
PID 2124 wrote to memory of 3324	2124	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	90
PID 2124 wrote to memory of 3324	2124	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	90
PID 2124 wrote to memory of 3324	2124	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	90
PID 2124 wrote to memory of 2140	2124	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	93
PID 2124 wrote to memory of 2140	2124	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	93
PID 2124 wrote to memory of 2140	2124	JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe	93
PID 4100 wrote to memory of 3084	4100	uokqbldj.exe	98
PID 4100 wrote to memory of 3084	4100	uokqbldj.exe	98
PID 4100 wrote to memory of 3084	4100	uokqbldj.exe	98
PID 4100 wrote to memory of 3084	4100	uokqbldj.exe	98
PID 4100 wrote to memory of 3084	4100	uokqbldj.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2124
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\atrmezln\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3840
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\uokqbldj.exe" C:\Windows\SysWOW64\atrmezln\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2576
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create atrmezln binPath= "C:\Windows\SysWOW64\atrmezln\uokqbldj.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3584
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description atrmezln "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1372
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start atrmezln
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3324
- 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:2140
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2124 -s 660
  2⤵
  - Program crash
  PID:2036

C:\Windows\SysWOW64\atrmezln\uokqbldj.exe
C:\Windows\SysWOW64\atrmezln\uokqbldj.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1b6729df427ddd748d46f7fe7c20e21b38f48a88ba4e56cd264dd715869c0036.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4100
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3084
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4100 -s 508
  2⤵
  - Program crash
  PID:5004

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2124 -ip 2124
1⤵
PID:1100

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4100 -ip 4100
1⤵
PID:2688

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\uokqbldj.exe

Filesize
14.4MB

MD5
83de3d8f7b3690dc1b5bf5e98a3fd445

SHA1
3336431735937a3d673a9e904fdabd0de75306c4

SHA256
6f47dd42303395bb618357b9fda60f09d91c5487c3bc7ea35d2f29b68f7c99bf

SHA512
16dc15e2ed251d5fdb67795a7c04893d805bd66146cb3e68e618a3443da49c84487b8bb1f72be771682e6892bd8635c6fd52340e5c19b21adb0f9be67d410073

Download Submit
memory/2124-8-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/2124-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2124-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2124-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2124-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2124-1-0x0000000000460000-0x0000000000560000-memory.dmp

Filesize
1024KB

Download
memory/3084-14-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/3084-16-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/3084-17-0x00000000004A0000-0x00000000004B5000-memory.dmp

Filesize
84KB

Download
memory/4100-12-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/4100-11-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/4100-13-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download
memory/4100-18-0x0000000000400000-0x0000000000459000-memory.dmp

Filesize
356KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads