tofsee | 2b526e3d6299bab06aa1ddf22f546aa5a1972d39019ea98ccda44e75f0a74065

General

Target

9f3c94a238a6c4f521f1e7269ee03ea2_JaffaCakes118.exe
Size

11.8MB
MD5

9f3c94a238a6c4f521f1e7269ee03ea2
SHA1

4bace04fc096803ad06afd0bb1480fafb475ff2c
SHA256

2b526e3d6299bab06aa1ddf22f546aa5a1972d39019ea98ccda44e75f0a74065
SHA512

1ba61535510ac498649852f3e548e71d5dd0ad0ed455c2c5367d937bb994a68c8b5cac2aff0d45759c0203a3f5124f7463f2797413411eaeabc2899bb12c3a11
SSDEEP

98304:euuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuO:

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

Processes:

netsh.exe

pid	Process
4724	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\arwymhmn\ImagePath = "C:\\Windows\\SysWOW64\\arwymhmn\\hbkuhkpb.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

Processes:

9f3c94a238a6c4f521f1e7269ee03ea2_JaffaCakes118.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	9f3c94a238a6c4f521f1e7269ee03ea2_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid	Process
4268	svchost.exe

Executes dropped EXE 1 IoCs

Processes:

hbkuhkpb.exe

pid	Process
2960	hbkuhkpb.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

hbkuhkpb.exe

description	pid	Process	procid_target
PID 2960 set thread context of 4268	2960	hbkuhkpb.exe	105

Launches sc.exe 3 IoCs

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

Processes:

sc.exesc.exesc.exe

pid	Process
2176	sc.exe
428	sc.exe
4608	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

Processes:

netsh.exe

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

Processes:

WerFault.exeWerFault.exe

pid	pid_target	Process	procid_target
4552	4656	WerFault.exe	81
3452	2960	WerFault.exe	98

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

Processes:

netsh.execmd.exesc.exesc.exehbkuhkpb.exesvchost.exe9f3c94a238a6c4f521f1e7269ee03ea2_JaffaCakes118.execmd.exesc.exe

description	ioc	Process
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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	hbkuhkpb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	9f3c94a238a6c4f521f1e7269ee03ea2_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

9f3c94a238a6c4f521f1e7269ee03ea2_JaffaCakes118.exehbkuhkpb.exe

description	pid	Process	procid_target
PID 4656 wrote to memory of 2748	4656	9f3c94a238a6c4f521f1e7269ee03ea2_JaffaCakes118.exe	87
PID 4656 wrote to memory of 2748	4656	9f3c94a238a6c4f521f1e7269ee03ea2_JaffaCakes118.exe	87
PID 4656 wrote to memory of 2748	4656	9f3c94a238a6c4f521f1e7269ee03ea2_JaffaCakes118.exe	87
PID 4656 wrote to memory of 1700	4656	9f3c94a238a6c4f521f1e7269ee03ea2_JaffaCakes118.exe	89
PID 4656 wrote to memory of 1700	4656	9f3c94a238a6c4f521f1e7269ee03ea2_JaffaCakes118.exe	89
PID 4656 wrote to memory of 1700	4656	9f3c94a238a6c4f521f1e7269ee03ea2_JaffaCakes118.exe	89
PID 4656 wrote to memory of 2176	4656	9f3c94a238a6c4f521f1e7269ee03ea2_JaffaCakes118.exe	91
PID 4656 wrote to memory of 2176	4656	9f3c94a238a6c4f521f1e7269ee03ea2_JaffaCakes118.exe	91
PID 4656 wrote to memory of 2176	4656	9f3c94a238a6c4f521f1e7269ee03ea2_JaffaCakes118.exe	91
PID 4656 wrote to memory of 428	4656	9f3c94a238a6c4f521f1e7269ee03ea2_JaffaCakes118.exe	93
PID 4656 wrote to memory of 428	4656	9f3c94a238a6c4f521f1e7269ee03ea2_JaffaCakes118.exe	93
PID 4656 wrote to memory of 428	4656	9f3c94a238a6c4f521f1e7269ee03ea2_JaffaCakes118.exe	93
PID 4656 wrote to memory of 4608	4656	9f3c94a238a6c4f521f1e7269ee03ea2_JaffaCakes118.exe	95
PID 4656 wrote to memory of 4608	4656	9f3c94a238a6c4f521f1e7269ee03ea2_JaffaCakes118.exe	95
PID 4656 wrote to memory of 4608	4656	9f3c94a238a6c4f521f1e7269ee03ea2_JaffaCakes118.exe	95
PID 4656 wrote to memory of 4724	4656	9f3c94a238a6c4f521f1e7269ee03ea2_JaffaCakes118.exe	100
PID 4656 wrote to memory of 4724	4656	9f3c94a238a6c4f521f1e7269ee03ea2_JaffaCakes118.exe	100
PID 4656 wrote to memory of 4724	4656	9f3c94a238a6c4f521f1e7269ee03ea2_JaffaCakes118.exe	100
PID 2960 wrote to memory of 4268	2960	hbkuhkpb.exe	105
PID 2960 wrote to memory of 4268	2960	hbkuhkpb.exe	105
PID 2960 wrote to memory of 4268	2960	hbkuhkpb.exe	105
PID 2960 wrote to memory of 4268	2960	hbkuhkpb.exe	105
PID 2960 wrote to memory of 4268	2960	hbkuhkpb.exe	105

C:\Users\Admin\AppData\Local\Temp\9f3c94a238a6c4f521f1e7269ee03ea2_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\9f3c94a238a6c4f521f1e7269ee03ea2_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4656
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\arwymhmn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2748
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\hbkuhkpb.exe" C:\Windows\SysWOW64\arwymhmn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1700
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create arwymhmn binPath= "C:\Windows\SysWOW64\arwymhmn\hbkuhkpb.exe /d\"C:\Users\Admin\AppData\Local\Temp\9f3c94a238a6c4f521f1e7269ee03ea2_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2176
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description arwymhmn "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:428
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start arwymhmn
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4608
- 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:4724
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4656 -s 596
  2⤵
  - Program crash
  PID:4552

C:\Windows\SysWOW64\arwymhmn\hbkuhkpb.exe
C:\Windows\SysWOW64\arwymhmn\hbkuhkpb.exe /d"C:\Users\Admin\AppData\Local\Temp\9f3c94a238a6c4f521f1e7269ee03ea2_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2960
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4268
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2960 -s 556
  2⤵
  - Program crash
  PID:3452

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4656 -ip 4656
1⤵
PID:2540

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 2960 -ip 2960
1⤵
PID:4376

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

Loading Replay Monitor...

Downloads

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

Filesize
10.9MB

MD5
5a7e19d8f57b2f3296a5f7c69dd8cf11

SHA1
3428e50c13fb0203c9f457ccb130e12cee92d784

SHA256
15ef680d3a319b01ee10eae1326b303b9debbd0966ebf11feb8bbf1f48cb4989

SHA512
0bd8a5f7a4c2a592f190e229c7dc35dc4b2266bb64c22a147ee6985b6b7b6e7204f0c15bd1b360a27914dbb480fd397b5fda2d624e4832c7f68e14a3d32325e5

Download Submit
memory/2960-12-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2960-14-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2960-13-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2960-19-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4268-15-0x0000000000630000-0x0000000000645000-memory.dmp

Filesize
84KB

Download
memory/4268-17-0x0000000000630000-0x0000000000645000-memory.dmp

Filesize
84KB

Download
memory/4268-18-0x0000000000630000-0x0000000000645000-memory.dmp

Filesize
84KB

Download
memory/4656-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4656-1-0x00000000004C0000-0x00000000005C0000-memory.dmp

Filesize
1024KB

Download
memory/4656-8-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4656-11-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4656-10-0x00000000021F0000-0x0000000002203000-memory.dmp

Filesize
76KB

Download
memory/4656-2-0x00000000021F0000-0x0000000002203000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads