tofsee | 49b1fc622e0df38a6db01ee66e1741dbd95ec9a489da4c0ea40e5929d0e7efc7

General

Target

JaffaCakes118_49b1fc622e0df38a6db01ee66e1741dbd95ec9a489da4c0ea40e5929d0e7efc7.exe
Size

343KB
MD5

0c4c991cfff91ea0d5a0d965615045f1
SHA1

6b2eaec01ddd2e6fabb0fb0a0f9b5a4ea9eb61f0
SHA256

49b1fc622e0df38a6db01ee66e1741dbd95ec9a489da4c0ea40e5929d0e7efc7
SHA512

86051fe550e600e349cd5caedca0656cf9133650cd66e5e2e3d36a7efc2d47e11c2bb3083322cd12a152f3aec548d0fa0bd2377bdeaea93c3a291718bc176ed9
SSDEEP

6144:i1wGn2+VYOw4WE0NpkAk6o4odsHvNU1grZ4BwY+q:iSG2+o57NKAk6o4odsHvNB4Btb

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.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
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\rsavssie\ImagePath = "C:\\Windows\\SysWOW64\\rsavssie\\oxgocucl.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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	JaffaCakes118_49b1fc622e0df38a6db01ee66e1741dbd95ec9a489da4c0ea40e5929d0e7efc7.exe

Deletes itself 1 IoCs

pid	Process
2848	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3532	oxgocucl.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3532 set thread context of 2848	3532	oxgocucl.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
3028	sc.exe
1988	sc.exe
1792	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
3672	5056	WerFault.exe	81
4544	3532	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_49b1fc622e0df38a6db01ee66e1741dbd95ec9a489da4c0ea40e5929d0e7efc7.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	oxgocucl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 5056 wrote to memory of 844	5056	JaffaCakes118_49b1fc622e0df38a6db01ee66e1741dbd95ec9a489da4c0ea40e5929d0e7efc7.exe	82
PID 5056 wrote to memory of 844	5056	JaffaCakes118_49b1fc622e0df38a6db01ee66e1741dbd95ec9a489da4c0ea40e5929d0e7efc7.exe	82
PID 5056 wrote to memory of 844	5056	JaffaCakes118_49b1fc622e0df38a6db01ee66e1741dbd95ec9a489da4c0ea40e5929d0e7efc7.exe	82
PID 5056 wrote to memory of 2316	5056	JaffaCakes118_49b1fc622e0df38a6db01ee66e1741dbd95ec9a489da4c0ea40e5929d0e7efc7.exe	84
PID 5056 wrote to memory of 2316	5056	JaffaCakes118_49b1fc622e0df38a6db01ee66e1741dbd95ec9a489da4c0ea40e5929d0e7efc7.exe	84
PID 5056 wrote to memory of 2316	5056	JaffaCakes118_49b1fc622e0df38a6db01ee66e1741dbd95ec9a489da4c0ea40e5929d0e7efc7.exe	84
PID 5056 wrote to memory of 3028	5056	JaffaCakes118_49b1fc622e0df38a6db01ee66e1741dbd95ec9a489da4c0ea40e5929d0e7efc7.exe	86
PID 5056 wrote to memory of 3028	5056	JaffaCakes118_49b1fc622e0df38a6db01ee66e1741dbd95ec9a489da4c0ea40e5929d0e7efc7.exe	86
PID 5056 wrote to memory of 3028	5056	JaffaCakes118_49b1fc622e0df38a6db01ee66e1741dbd95ec9a489da4c0ea40e5929d0e7efc7.exe	86
PID 5056 wrote to memory of 1988	5056	JaffaCakes118_49b1fc622e0df38a6db01ee66e1741dbd95ec9a489da4c0ea40e5929d0e7efc7.exe	88
PID 5056 wrote to memory of 1988	5056	JaffaCakes118_49b1fc622e0df38a6db01ee66e1741dbd95ec9a489da4c0ea40e5929d0e7efc7.exe	88
PID 5056 wrote to memory of 1988	5056	JaffaCakes118_49b1fc622e0df38a6db01ee66e1741dbd95ec9a489da4c0ea40e5929d0e7efc7.exe	88
PID 5056 wrote to memory of 1792	5056	JaffaCakes118_49b1fc622e0df38a6db01ee66e1741dbd95ec9a489da4c0ea40e5929d0e7efc7.exe	90
PID 5056 wrote to memory of 1792	5056	JaffaCakes118_49b1fc622e0df38a6db01ee66e1741dbd95ec9a489da4c0ea40e5929d0e7efc7.exe	90
PID 5056 wrote to memory of 1792	5056	JaffaCakes118_49b1fc622e0df38a6db01ee66e1741dbd95ec9a489da4c0ea40e5929d0e7efc7.exe	90
PID 5056 wrote to memory of 4224	5056	JaffaCakes118_49b1fc622e0df38a6db01ee66e1741dbd95ec9a489da4c0ea40e5929d0e7efc7.exe	93
PID 5056 wrote to memory of 4224	5056	JaffaCakes118_49b1fc622e0df38a6db01ee66e1741dbd95ec9a489da4c0ea40e5929d0e7efc7.exe	93
PID 5056 wrote to memory of 4224	5056	JaffaCakes118_49b1fc622e0df38a6db01ee66e1741dbd95ec9a489da4c0ea40e5929d0e7efc7.exe	93
PID 3532 wrote to memory of 2848	3532	oxgocucl.exe	100
PID 3532 wrote to memory of 2848	3532	oxgocucl.exe	100
PID 3532 wrote to memory of 2848	3532	oxgocucl.exe	100
PID 3532 wrote to memory of 2848	3532	oxgocucl.exe	100
PID 3532 wrote to memory of 2848	3532	oxgocucl.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_49b1fc622e0df38a6db01ee66e1741dbd95ec9a489da4c0ea40e5929d0e7efc7.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_49b1fc622e0df38a6db01ee66e1741dbd95ec9a489da4c0ea40e5929d0e7efc7.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5056
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rsavssie\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:844
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\oxgocucl.exe" C:\Windows\SysWOW64\rsavssie\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2316
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create rsavssie binPath= "C:\Windows\SysWOW64\rsavssie\oxgocucl.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_49b1fc622e0df38a6db01ee66e1741dbd95ec9a489da4c0ea40e5929d0e7efc7.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3028
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description rsavssie "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1988
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start rsavssie
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1792
- 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 5056 -s 1040
  2⤵
  - Program crash
  PID:3672

C:\Windows\SysWOW64\rsavssie\oxgocucl.exe
C:\Windows\SysWOW64\rsavssie\oxgocucl.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_49b1fc622e0df38a6db01ee66e1741dbd95ec9a489da4c0ea40e5929d0e7efc7.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3532
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2848
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3532 -s 532
  2⤵
  - Program crash
  PID:4544

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 5056 -ip 5056
1⤵
PID:3780

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3532 -ip 3532
1⤵
PID:2204

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\oxgocucl.exe

Filesize
12.8MB

MD5
9eb003ae615e5884f5a837f742a5c60c

SHA1
247ed4fab3925b0f9ed19bd9fc78c719918c1eb3

SHA256
cf155fc162bd697ed190f9bb3bb6e14e249966ddce1b1b90989c9599952489a4

SHA512
47ecb23c380593be6ce9528639db24d927d4fc524cf1f7e6a16d1e4130c15d73c4c9b495b2196cc4f07b524ba087361fea9c79c83e2e29cf336313ebb2c1357f

Download Submit
memory/2848-11-0x0000000000FC0000-0x0000000000FD5000-memory.dmp

Filesize
84KB

Download
memory/2848-13-0x0000000000FC0000-0x0000000000FD5000-memory.dmp

Filesize
84KB

Download
memory/2848-14-0x0000000000FC0000-0x0000000000FD5000-memory.dmp

Filesize
84KB

Download
memory/3532-15-0x0000000000400000-0x00000000008FA000-memory.dmp

Filesize
5.0MB

Download
memory/5056-1-0x0000000000BC0000-0x0000000000CC0000-memory.dmp

Filesize
1024KB

Download
memory/5056-2-0x0000000000BA0000-0x0000000000BB3000-memory.dmp

Filesize
76KB

Download
memory/5056-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5056-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5056-8-0x0000000000BA0000-0x0000000000BB3000-memory.dmp

Filesize
76KB

Download
memory/5056-7-0x0000000000400000-0x00000000008FA000-memory.dmp

Filesize
5.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads