tofsee | 2041c358dd60883a38ef86aca2312d60b212224630afd4f71f0912fdd9509321

General

Target

JaffaCakes118_2041c358dd60883a38ef86aca2312d60b212224630afd4f71f0912fdd9509321.exe
Size

277KB
MD5

2f1636d08eadd59792ff590f7752059c
SHA1

0ba20ef238027d1fb320df79746f5453b1cf3892
SHA256

2041c358dd60883a38ef86aca2312d60b212224630afd4f71f0912fdd9509321
SHA512

0ce40c8db3321bae1fdd882d315a2b146a3388cdfd7381437a827cd02980282e04f001e1c25120305d16300da111133ebdd588dd2b2b2f716c98e4973459a250
SSDEEP

6144:ExmFJ/CjeWZ9qpvqTeU/BmZ9QL47avLE:9f/iHqdqTeaqiL47ag

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
620	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\suxiuerr\ImagePath = "C:\\Windows\\SysWOW64\\suxiuerr\\dfzokgct.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	JaffaCakes118_2041c358dd60883a38ef86aca2312d60b212224630afd4f71f0912fdd9509321.exe

Deletes itself 1 IoCs

pid	Process
4768	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3892	dfzokgct.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3892 set thread context of 4768	3892	dfzokgct.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
3144	sc.exe
5032	sc.exe
5036	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
1148	3168	WerFault.exe	82
2464	3892	WerFault.exe	94

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	dfzokgct.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_2041c358dd60883a38ef86aca2312d60b212224630afd4f71f0912fdd9509321.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3168 wrote to memory of 4960	3168	JaffaCakes118_2041c358dd60883a38ef86aca2312d60b212224630afd4f71f0912fdd9509321.exe	84
PID 3168 wrote to memory of 4960	3168	JaffaCakes118_2041c358dd60883a38ef86aca2312d60b212224630afd4f71f0912fdd9509321.exe	84
PID 3168 wrote to memory of 4960	3168	JaffaCakes118_2041c358dd60883a38ef86aca2312d60b212224630afd4f71f0912fdd9509321.exe	84
PID 3168 wrote to memory of 1636	3168	JaffaCakes118_2041c358dd60883a38ef86aca2312d60b212224630afd4f71f0912fdd9509321.exe	86
PID 3168 wrote to memory of 1636	3168	JaffaCakes118_2041c358dd60883a38ef86aca2312d60b212224630afd4f71f0912fdd9509321.exe	86
PID 3168 wrote to memory of 1636	3168	JaffaCakes118_2041c358dd60883a38ef86aca2312d60b212224630afd4f71f0912fdd9509321.exe	86
PID 3168 wrote to memory of 5036	3168	JaffaCakes118_2041c358dd60883a38ef86aca2312d60b212224630afd4f71f0912fdd9509321.exe	88
PID 3168 wrote to memory of 5036	3168	JaffaCakes118_2041c358dd60883a38ef86aca2312d60b212224630afd4f71f0912fdd9509321.exe	88
PID 3168 wrote to memory of 5036	3168	JaffaCakes118_2041c358dd60883a38ef86aca2312d60b212224630afd4f71f0912fdd9509321.exe	88
PID 3168 wrote to memory of 3144	3168	JaffaCakes118_2041c358dd60883a38ef86aca2312d60b212224630afd4f71f0912fdd9509321.exe	90
PID 3168 wrote to memory of 3144	3168	JaffaCakes118_2041c358dd60883a38ef86aca2312d60b212224630afd4f71f0912fdd9509321.exe	90
PID 3168 wrote to memory of 3144	3168	JaffaCakes118_2041c358dd60883a38ef86aca2312d60b212224630afd4f71f0912fdd9509321.exe	90
PID 3168 wrote to memory of 5032	3168	JaffaCakes118_2041c358dd60883a38ef86aca2312d60b212224630afd4f71f0912fdd9509321.exe	92
PID 3168 wrote to memory of 5032	3168	JaffaCakes118_2041c358dd60883a38ef86aca2312d60b212224630afd4f71f0912fdd9509321.exe	92
PID 3168 wrote to memory of 5032	3168	JaffaCakes118_2041c358dd60883a38ef86aca2312d60b212224630afd4f71f0912fdd9509321.exe	92
PID 3168 wrote to memory of 620	3168	JaffaCakes118_2041c358dd60883a38ef86aca2312d60b212224630afd4f71f0912fdd9509321.exe	95
PID 3168 wrote to memory of 620	3168	JaffaCakes118_2041c358dd60883a38ef86aca2312d60b212224630afd4f71f0912fdd9509321.exe	95
PID 3168 wrote to memory of 620	3168	JaffaCakes118_2041c358dd60883a38ef86aca2312d60b212224630afd4f71f0912fdd9509321.exe	95
PID 3892 wrote to memory of 4768	3892	dfzokgct.exe	101
PID 3892 wrote to memory of 4768	3892	dfzokgct.exe	101
PID 3892 wrote to memory of 4768	3892	dfzokgct.exe	101
PID 3892 wrote to memory of 4768	3892	dfzokgct.exe	101
PID 3892 wrote to memory of 4768	3892	dfzokgct.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2041c358dd60883a38ef86aca2312d60b212224630afd4f71f0912fdd9509321.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2041c358dd60883a38ef86aca2312d60b212224630afd4f71f0912fdd9509321.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3168
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\suxiuerr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4960
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dfzokgct.exe" C:\Windows\SysWOW64\suxiuerr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1636
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create suxiuerr binPath= "C:\Windows\SysWOW64\suxiuerr\dfzokgct.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2041c358dd60883a38ef86aca2312d60b212224630afd4f71f0912fdd9509321.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5036
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description suxiuerr "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3144
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start suxiuerr
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5032
- 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:620
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3168 -s 1192
  2⤵
  - Program crash
  PID:1148

C:\Windows\SysWOW64\suxiuerr\dfzokgct.exe
C:\Windows\SysWOW64\suxiuerr\dfzokgct.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2041c358dd60883a38ef86aca2312d60b212224630afd4f71f0912fdd9509321.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3892
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4768
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3892 -s 532
  2⤵
  - Program crash
  PID:2464

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3168 -ip 3168
1⤵
PID:968

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3892 -ip 3892
1⤵
PID:4212

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\dfzokgct.exe

Filesize
12.9MB

MD5
137459ab564628430862f0f26b72fefe

SHA1
3d4cfc2f6ac747f6c32bcfbb7c3309ddd73a472b

SHA256
2f41cd0c91239483c0a9af0a958a3f03f2aa932f1e9ea389ac4da0a64c914434

SHA512
619e53b6a8d9cbf6d07c1173b873967e89025dbd7be31f0baa64aa2e2bdf51f600ca2495183283ba219330fffd286089a9f3b7f26a8ec44cc56048889f69782b

Download Submit
memory/3168-1-0x0000000002320000-0x0000000002420000-memory.dmp

Filesize
1024KB

Download
memory/3168-2-0x0000000002160000-0x0000000002173000-memory.dmp

Filesize
76KB

Download
memory/3168-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3168-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3168-8-0x0000000002160000-0x0000000002173000-memory.dmp

Filesize
76KB

Download
memory/3168-7-0x0000000000400000-0x0000000001FCB000-memory.dmp

Filesize
27.8MB

Download
memory/3892-15-0x0000000000400000-0x0000000001FCB000-memory.dmp

Filesize
27.8MB

Download
memory/4768-11-0x0000000000490000-0x00000000004A5000-memory.dmp

Filesize
84KB

Download
memory/4768-13-0x0000000000490000-0x00000000004A5000-memory.dmp

Filesize
84KB

Download
memory/4768-14-0x0000000000490000-0x00000000004A5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads