tofsee | ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0

General

Target

JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe
Size

153KB
MD5

b4b463d7f677821bef88956f82e4acfe
SHA1

e8b8e46d97fddabb2a1e3641b934ea82f7f84617
SHA256

ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0
SHA512

ce0a47ddd139ddc927776b9925c194aa8ed22d91409d068674e2ebdb16956155e1d3169e46db97841047084ca552af89f6452244064f0e0883c86a73b58c8d73
SSDEEP

3072:C7wDVf/TBmhfUU+68DF+uuUzs6HB571DL0O:C7wDVYhcUkFBz18O

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
1336	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\kzkrzchb\ImagePath = "C:\\Windows\\SysWOW64\\kzkrzchb\\qfsoazse.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_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe

Deletes itself 1 IoCs

pid	Process
1848	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4748	qfsoazse.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4748 set thread context of 1848	4748	qfsoazse.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
2760	sc.exe
4028	sc.exe
1140	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
2004	1748	WerFault.exe	80
2868	4748	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	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	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.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	qfsoazse.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1748 wrote to memory of 3492	1748	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	82
PID 1748 wrote to memory of 3492	1748	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	82
PID 1748 wrote to memory of 3492	1748	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	82
PID 1748 wrote to memory of 2860	1748	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	84
PID 1748 wrote to memory of 2860	1748	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	84
PID 1748 wrote to memory of 2860	1748	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	84
PID 1748 wrote to memory of 2760	1748	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	86
PID 1748 wrote to memory of 2760	1748	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	86
PID 1748 wrote to memory of 2760	1748	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	86
PID 1748 wrote to memory of 4028	1748	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	88
PID 1748 wrote to memory of 4028	1748	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	88
PID 1748 wrote to memory of 4028	1748	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	88
PID 1748 wrote to memory of 1140	1748	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	90
PID 1748 wrote to memory of 1140	1748	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	90
PID 1748 wrote to memory of 1140	1748	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	90
PID 1748 wrote to memory of 1336	1748	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	93
PID 1748 wrote to memory of 1336	1748	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	93
PID 1748 wrote to memory of 1336	1748	JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe	93
PID 4748 wrote to memory of 1848	4748	qfsoazse.exe	98
PID 4748 wrote to memory of 1848	4748	qfsoazse.exe	98
PID 4748 wrote to memory of 1848	4748	qfsoazse.exe	98
PID 4748 wrote to memory of 1848	4748	qfsoazse.exe	98
PID 4748 wrote to memory of 1848	4748	qfsoazse.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1748
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kzkrzchb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3492
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\qfsoazse.exe" C:\Windows\SysWOW64\kzkrzchb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2860
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create kzkrzchb binPath= "C:\Windows\SysWOW64\kzkrzchb\qfsoazse.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2760
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description kzkrzchb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4028
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start kzkrzchb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1140
- 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:1336
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1748 -s 1196
  2⤵
  - Program crash
  PID:2004

C:\Windows\SysWOW64\kzkrzchb\qfsoazse.exe
C:\Windows\SysWOW64\kzkrzchb\qfsoazse.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ac640c150beb86b7a5dea208cdf187aadba828f7115ed2418ab06461a0ccfcc0.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4748
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1848
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4748 -s 508
  2⤵
  - Program crash
  PID:2868

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1748 -ip 1748
1⤵
PID:4960

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4748 -ip 4748
1⤵
PID:1808

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

Replay Monitor

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Downloads

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

Filesize
10.2MB

MD5
e1ebe7f51ea3573698501136915b3f10

SHA1
8a4f84cc10c8616978d71d5e5766bbe207493bb7

SHA256
8beafa8f167b5a68520f3747ca1a610ff58d5b7bbe42fb5c07cd779947196876

SHA512
a5c983792ce54201c0f053b0266f56571cd9533a513a3545167a380feef1b963fc50e063906ffc4918b1ce6038e8a8b73484386c43783d92f2d62d0fddcd66b8

Download Submit
memory/1748-8-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/1748-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1748-2-0x0000000000640000-0x0000000000653000-memory.dmp

Filesize
76KB

Download
memory/1748-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1748-9-0x0000000000640000-0x0000000000653000-memory.dmp

Filesize
76KB

Download
memory/1748-1-0x0000000000850000-0x0000000000950000-memory.dmp

Filesize
1024KB

Download
memory/1848-14-0x00000000004F0000-0x0000000000505000-memory.dmp

Filesize
84KB

Download
memory/1848-16-0x00000000004F0000-0x0000000000505000-memory.dmp

Filesize
84KB

Download
memory/1848-17-0x00000000004F0000-0x0000000000505000-memory.dmp

Filesize
84KB

Download
memory/4748-11-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/4748-12-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/4748-13-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/4748-19-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads