tofsee | ea8c3f4261027d08ab8cce0cde9aab5c4a91b9e1dfbf05e9256ad1ca109346df

General

Target

JaffaCakes118_ea8c3f4261027d08ab8cce0cde9aab5c4a91b9e1dfbf05e9256ad1ca109346df.exe
Size

165KB
MD5

e3ff0997d4491087087113690455d779
SHA1

0917d465cdb14b85472f8fe12814a6f42d605489
SHA256

ea8c3f4261027d08ab8cce0cde9aab5c4a91b9e1dfbf05e9256ad1ca109346df
SHA512

36231e81ed100a0557956f5164335545ac5c4bbfa922c9c2481a9f4e3f3f31a492203d808e1aab6183df952df9a1aaaf69427b585bb9695b7fe8dcc8c39ef780
SSDEEP

3072:3jeAGOlqXQ7///rqPdKVvXckj8Dw1UfsF3uz04Vc2:KAG+qXosduvXcktAs9u/

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
3100	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\rnxrmwgo\ImagePath = "C:\\Windows\\SysWOW64\\rnxrmwgo\\jcqcuoqd.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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	JaffaCakes118_ea8c3f4261027d08ab8cce0cde9aab5c4a91b9e1dfbf05e9256ad1ca109346df.exe

Deletes itself 1 IoCs

pid	Process
1464	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
5044	jcqcuoqd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5044 set thread context of 1464	5044	jcqcuoqd.exe	93

Launches sc.exe 3 IoCs

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

pid	Process
3056	sc.exe
3444	sc.exe
4968	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
3080	1596	WerFault.exe	81
3700	5044	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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	jcqcuoqd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_ea8c3f4261027d08ab8cce0cde9aab5c4a91b9e1dfbf05e9256ad1ca109346df.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1596 wrote to memory of 4508	1596	JaffaCakes118_ea8c3f4261027d08ab8cce0cde9aab5c4a91b9e1dfbf05e9256ad1ca109346df.exe	82
PID 1596 wrote to memory of 4508	1596	JaffaCakes118_ea8c3f4261027d08ab8cce0cde9aab5c4a91b9e1dfbf05e9256ad1ca109346df.exe	82
PID 1596 wrote to memory of 4508	1596	JaffaCakes118_ea8c3f4261027d08ab8cce0cde9aab5c4a91b9e1dfbf05e9256ad1ca109346df.exe	82
PID 1596 wrote to memory of 2596	1596	JaffaCakes118_ea8c3f4261027d08ab8cce0cde9aab5c4a91b9e1dfbf05e9256ad1ca109346df.exe	84
PID 1596 wrote to memory of 2596	1596	JaffaCakes118_ea8c3f4261027d08ab8cce0cde9aab5c4a91b9e1dfbf05e9256ad1ca109346df.exe	84
PID 1596 wrote to memory of 2596	1596	JaffaCakes118_ea8c3f4261027d08ab8cce0cde9aab5c4a91b9e1dfbf05e9256ad1ca109346df.exe	84
PID 1596 wrote to memory of 3056	1596	JaffaCakes118_ea8c3f4261027d08ab8cce0cde9aab5c4a91b9e1dfbf05e9256ad1ca109346df.exe	86
PID 1596 wrote to memory of 3056	1596	JaffaCakes118_ea8c3f4261027d08ab8cce0cde9aab5c4a91b9e1dfbf05e9256ad1ca109346df.exe	86
PID 1596 wrote to memory of 3056	1596	JaffaCakes118_ea8c3f4261027d08ab8cce0cde9aab5c4a91b9e1dfbf05e9256ad1ca109346df.exe	86
PID 1596 wrote to memory of 3444	1596	JaffaCakes118_ea8c3f4261027d08ab8cce0cde9aab5c4a91b9e1dfbf05e9256ad1ca109346df.exe	88
PID 1596 wrote to memory of 3444	1596	JaffaCakes118_ea8c3f4261027d08ab8cce0cde9aab5c4a91b9e1dfbf05e9256ad1ca109346df.exe	88
PID 1596 wrote to memory of 3444	1596	JaffaCakes118_ea8c3f4261027d08ab8cce0cde9aab5c4a91b9e1dfbf05e9256ad1ca109346df.exe	88
PID 1596 wrote to memory of 4968	1596	JaffaCakes118_ea8c3f4261027d08ab8cce0cde9aab5c4a91b9e1dfbf05e9256ad1ca109346df.exe	90
PID 1596 wrote to memory of 4968	1596	JaffaCakes118_ea8c3f4261027d08ab8cce0cde9aab5c4a91b9e1dfbf05e9256ad1ca109346df.exe	90
PID 1596 wrote to memory of 4968	1596	JaffaCakes118_ea8c3f4261027d08ab8cce0cde9aab5c4a91b9e1dfbf05e9256ad1ca109346df.exe	90
PID 5044 wrote to memory of 1464	5044	jcqcuoqd.exe	93
PID 5044 wrote to memory of 1464	5044	jcqcuoqd.exe	93
PID 5044 wrote to memory of 1464	5044	jcqcuoqd.exe	93
PID 5044 wrote to memory of 1464	5044	jcqcuoqd.exe	93
PID 5044 wrote to memory of 1464	5044	jcqcuoqd.exe	93
PID 1596 wrote to memory of 3100	1596	JaffaCakes118_ea8c3f4261027d08ab8cce0cde9aab5c4a91b9e1dfbf05e9256ad1ca109346df.exe	95
PID 1596 wrote to memory of 3100	1596	JaffaCakes118_ea8c3f4261027d08ab8cce0cde9aab5c4a91b9e1dfbf05e9256ad1ca109346df.exe	95
PID 1596 wrote to memory of 3100	1596	JaffaCakes118_ea8c3f4261027d08ab8cce0cde9aab5c4a91b9e1dfbf05e9256ad1ca109346df.exe	95

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ea8c3f4261027d08ab8cce0cde9aab5c4a91b9e1dfbf05e9256ad1ca109346df.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ea8c3f4261027d08ab8cce0cde9aab5c4a91b9e1dfbf05e9256ad1ca109346df.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1596
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rnxrmwgo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4508
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jcqcuoqd.exe" C:\Windows\SysWOW64\rnxrmwgo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2596
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create rnxrmwgo binPath= "C:\Windows\SysWOW64\rnxrmwgo\jcqcuoqd.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ea8c3f4261027d08ab8cce0cde9aab5c4a91b9e1dfbf05e9256ad1ca109346df.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3056
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description rnxrmwgo "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3444
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start rnxrmwgo
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4968
- 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:3100
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1596 -s 676
  2⤵
  - Program crash
  PID:3080

C:\Windows\SysWOW64\rnxrmwgo\jcqcuoqd.exe
C:\Windows\SysWOW64\rnxrmwgo\jcqcuoqd.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ea8c3f4261027d08ab8cce0cde9aab5c4a91b9e1dfbf05e9256ad1ca109346df.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5044
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1464
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5044 -s 388
  2⤵
  - Program crash
  PID:3700

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 5044 -ip 5044
1⤵
PID:3212

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 1596 -ip 1596
1⤵
PID:3240

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\jcqcuoqd.exe

Filesize
14.9MB

MD5
075b0671aa7602da07b24c526d81177e

SHA1
153662527d92230943bc057cf7255dfa5620338a

SHA256
4993eb5a1fba037b3ceb56a7b2ddc01ced65ef8b96b5896cebc4955b2688e566

SHA512
2f220536b2d17a866059cb02580dfa17779fcd78f4ecc0f1dc6ebe9fbf1a9775133d4f8a112371205c1292dfc007d9d5e6e9a0480e38805f7a35c285e32339b2

Download Submit
memory/1464-9-0x0000000000950000-0x0000000000965000-memory.dmp

Filesize
84KB

Download
memory/1464-21-0x0000000000950000-0x0000000000965000-memory.dmp

Filesize
84KB

Download
memory/1464-20-0x0000000000950000-0x0000000000965000-memory.dmp

Filesize
84KB

Download
memory/1464-19-0x0000000000950000-0x0000000000965000-memory.dmp

Filesize
84KB

Download
memory/1464-12-0x0000000000950000-0x0000000000965000-memory.dmp

Filesize
84KB

Download
memory/1596-17-0x00000000021A0000-0x00000000021B3000-memory.dmp

Filesize
76KB

Download
memory/1596-15-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/1596-18-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1596-0-0x0000000000520000-0x000000000052D000-memory.dmp

Filesize
52KB

Download
memory/1596-16-0x0000000000520000-0x000000000052D000-memory.dmp

Filesize
52KB

Download
memory/1596-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1596-1-0x00000000021A0000-0x00000000021B3000-memory.dmp

Filesize
76KB

Download
memory/5044-6-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/5044-8-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/5044-14-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/5044-7-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads