tofsee | 55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3

General

Target

JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe
Size

238KB
MD5

35f9cfb5aa8bbc185b3461e3aef129ab
SHA1

020be8206e4ae134f2a23b9c7cd2a4f1e5e63c54
SHA256

55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3
SHA512

acb5aab934ed6b371b17301c5d9203eb20b5465e6ea097f11ef4bc70a97b0ad6a5df095222cc83b4589ce0f92b820384004c2d7cd2336bac8d03d413c86ab7ed
SSDEEP

6144:l0BW7hRIsq1EzccIg3PygjeN7ITsq7igavwVf:l0Y7hRIsqocS3Pyg279

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
1988	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\pebtmytn\ImagePath = "C:\\Windows\\SysWOW64\\pebtmytn\\egaplhdu.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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe

Deletes itself 1 IoCs

pid	Process
1968	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4896	egaplhdu.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4896 set thread context of 1968	4896	egaplhdu.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
2500	sc.exe
908	sc.exe
1868	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
3448	2748	WerFault.exe	82
4288	4896	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	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	egaplhdu.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2748 wrote to memory of 5052	2748	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	83
PID 2748 wrote to memory of 5052	2748	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	83
PID 2748 wrote to memory of 5052	2748	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	83
PID 2748 wrote to memory of 1088	2748	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	85
PID 2748 wrote to memory of 1088	2748	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	85
PID 2748 wrote to memory of 1088	2748	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	85
PID 2748 wrote to memory of 1868	2748	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	87
PID 2748 wrote to memory of 1868	2748	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	87
PID 2748 wrote to memory of 1868	2748	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	87
PID 2748 wrote to memory of 2500	2748	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	89
PID 2748 wrote to memory of 2500	2748	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	89
PID 2748 wrote to memory of 2500	2748	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	89
PID 2748 wrote to memory of 908	2748	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	92
PID 2748 wrote to memory of 908	2748	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	92
PID 2748 wrote to memory of 908	2748	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	92
PID 2748 wrote to memory of 1988	2748	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	95
PID 2748 wrote to memory of 1988	2748	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	95
PID 2748 wrote to memory of 1988	2748	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	95
PID 4896 wrote to memory of 1968	4896	egaplhdu.exe	101
PID 4896 wrote to memory of 1968	4896	egaplhdu.exe	101
PID 4896 wrote to memory of 1968	4896	egaplhdu.exe	101
PID 4896 wrote to memory of 1968	4896	egaplhdu.exe	101
PID 4896 wrote to memory of 1968	4896	egaplhdu.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2748
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pebtmytn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5052
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\egaplhdu.exe" C:\Windows\SysWOW64\pebtmytn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1088
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create pebtmytn binPath= "C:\Windows\SysWOW64\pebtmytn\egaplhdu.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1868
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description pebtmytn "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2500
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start pebtmytn
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:908
- 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:1988
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2748 -s 1156
  2⤵
  - Program crash
  PID:3448

C:\Windows\SysWOW64\pebtmytn\egaplhdu.exe
C:\Windows\SysWOW64\pebtmytn\egaplhdu.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4896
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1968
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4896 -s 560
  2⤵
  - Program crash
  PID:4288

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2748 -ip 2748
1⤵
PID:3984

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 4896 -ip 4896
1⤵
PID:1828

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\egaplhdu.exe

Filesize
12.3MB

MD5
57838961cad2c8957a78e08f664bb284

SHA1
fed3c9ccda5ffb3dc6e3eb8c8845ec3cefdb7de9

SHA256
787ade84694aa4960acd41b6e01ba1f5a38c23e9fef5a205275b7fe8e09b423a

SHA512
e9af0bbef21834a238f5da9e2fa03bd52f0f0947be03ff51dafe7fe7c79a1b3e3b405244785b3c56c400e53d5f1dc90490b39c604c87a46619ff9b0caa91e605

Download Submit
memory/1968-12-0x0000000000900000-0x0000000000915000-memory.dmp

Filesize
84KB

Download
memory/1968-15-0x0000000000900000-0x0000000000915000-memory.dmp

Filesize
84KB

Download
memory/1968-14-0x0000000000900000-0x0000000000915000-memory.dmp

Filesize
84KB

Download
memory/2748-7-0x0000000002190000-0x000000000219D000-memory.dmp

Filesize
52KB

Download
memory/2748-8-0x00000000021A0000-0x00000000021B3000-memory.dmp

Filesize
76KB

Download
memory/2748-0-0x0000000002190000-0x000000000219D000-memory.dmp

Filesize
52KB

Download
memory/2748-6-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/2748-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2748-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2748-1-0x00000000021A0000-0x00000000021B3000-memory.dmp

Filesize
76KB

Download
memory/4896-11-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/4896-10-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/4896-17-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads