tofsee | 7de98713dc8186de58d01dd68413711ab38d71cd2203610d0f2d77f05473d9d2

General

Target

ff3b549a7f1ab5e6afea72312c41f32b_JaffaCakes118.exe
Size

14.1MB
MD5

ff3b549a7f1ab5e6afea72312c41f32b
SHA1

61268b3482f2580b105d7847be9c0a191c811eb5
SHA256

7de98713dc8186de58d01dd68413711ab38d71cd2203610d0f2d77f05473d9d2
SHA512

80fc2e375f09efd90fe0860d1476b3cb2e6679e19003692a74d8c32b6a125413f42ea169be5602dcd2d8c148da10eb722191c171e2bb40fd6df0a2237c845d99
SSDEEP

98304:oYjPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP:o

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.6

lazystax.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Creates new service(s) 1 TTPs
persistence

Windows Service
T1543.003

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
1280	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\zqfdpve\ImagePath = "C:\\Windows\\SysWOW64\\zqfdpve\\aephlstz.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-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation	ff3b549a7f1ab5e6afea72312c41f32b_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
4468	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4392	aephlstz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4392 set thread context of 4468	4392	aephlstz.exe	106

Launches sc.exe 3 IoCs

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

pid	Process
3852	sc.exe
4084	sc.exe
3692	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4864 wrote to memory of 3780	4864	ff3b549a7f1ab5e6afea72312c41f32b_JaffaCakes118.exe	88
PID 4864 wrote to memory of 3780	4864	ff3b549a7f1ab5e6afea72312c41f32b_JaffaCakes118.exe	88
PID 4864 wrote to memory of 3780	4864	ff3b549a7f1ab5e6afea72312c41f32b_JaffaCakes118.exe	88
PID 4864 wrote to memory of 2204	4864	ff3b549a7f1ab5e6afea72312c41f32b_JaffaCakes118.exe	90
PID 4864 wrote to memory of 2204	4864	ff3b549a7f1ab5e6afea72312c41f32b_JaffaCakes118.exe	90
PID 4864 wrote to memory of 2204	4864	ff3b549a7f1ab5e6afea72312c41f32b_JaffaCakes118.exe	90
PID 4864 wrote to memory of 3852	4864	ff3b549a7f1ab5e6afea72312c41f32b_JaffaCakes118.exe	94
PID 4864 wrote to memory of 3852	4864	ff3b549a7f1ab5e6afea72312c41f32b_JaffaCakes118.exe	94
PID 4864 wrote to memory of 3852	4864	ff3b549a7f1ab5e6afea72312c41f32b_JaffaCakes118.exe	94
PID 4864 wrote to memory of 4084	4864	ff3b549a7f1ab5e6afea72312c41f32b_JaffaCakes118.exe	96
PID 4864 wrote to memory of 4084	4864	ff3b549a7f1ab5e6afea72312c41f32b_JaffaCakes118.exe	96
PID 4864 wrote to memory of 4084	4864	ff3b549a7f1ab5e6afea72312c41f32b_JaffaCakes118.exe	96
PID 4864 wrote to memory of 3692	4864	ff3b549a7f1ab5e6afea72312c41f32b_JaffaCakes118.exe	100
PID 4864 wrote to memory of 3692	4864	ff3b549a7f1ab5e6afea72312c41f32b_JaffaCakes118.exe	100
PID 4864 wrote to memory of 3692	4864	ff3b549a7f1ab5e6afea72312c41f32b_JaffaCakes118.exe	100
PID 4864 wrote to memory of 1280	4864	ff3b549a7f1ab5e6afea72312c41f32b_JaffaCakes118.exe	103
PID 4864 wrote to memory of 1280	4864	ff3b549a7f1ab5e6afea72312c41f32b_JaffaCakes118.exe	103
PID 4864 wrote to memory of 1280	4864	ff3b549a7f1ab5e6afea72312c41f32b_JaffaCakes118.exe	103
PID 4392 wrote to memory of 4468	4392	aephlstz.exe	106
PID 4392 wrote to memory of 4468	4392	aephlstz.exe	106
PID 4392 wrote to memory of 4468	4392	aephlstz.exe	106
PID 4392 wrote to memory of 4468	4392	aephlstz.exe	106
PID 4392 wrote to memory of 4468	4392	aephlstz.exe	106

C:\Users\Admin\AppData\Local\Temp\ff3b549a7f1ab5e6afea72312c41f32b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ff3b549a7f1ab5e6afea72312c41f32b_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4864
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zqfdpve\
  2⤵
  PID:3780
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\aephlstz.exe" C:\Windows\SysWOW64\zqfdpve\
  2⤵
  PID:2204
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create zqfdpve binPath= "C:\Windows\SysWOW64\zqfdpve\aephlstz.exe /d\"C:\Users\Admin\AppData\Local\Temp\ff3b549a7f1ab5e6afea72312c41f32b_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:3852
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description zqfdpve "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:4084
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start zqfdpve
  2⤵
  - Launches sc.exe
  PID:3692
- 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
  PID:1280

C:\Windows\SysWOW64\zqfdpve\aephlstz.exe
C:\Windows\SysWOW64\zqfdpve\aephlstz.exe /d"C:\Users\Admin\AppData\Local\Temp\ff3b549a7f1ab5e6afea72312c41f32b_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4392
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:4468

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

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

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
13.3MB

MD5
18703cac3101bc5a7637f4e39d74a7ad

SHA1
0f9dbe1c3f111d798f7f68d065c969a7670a164f

SHA256
cd4e2bccab80405e341e52538ac4416798c62bb63fe3432215cd5fffa29e1249

SHA512
12ab1fd81d9b34100bcfbee620e7aa851b62e76dca01f57089a10552821b4b7b151c3d09df41b9818d95e2b42acbc3f84b4227c0ca2fe72b4d3e0eed6ed4c09d

Download Submit
memory/4392-10-0x0000000000C20000-0x0000000000D20000-memory.dmp

Filesize
1024KB

Download
memory/4392-12-0x0000000000400000-0x0000000000C17000-memory.dmp

Filesize
8.1MB

Download
memory/4392-14-0x0000000000400000-0x0000000000C17000-memory.dmp

Filesize
8.1MB

Download
memory/4468-11-0x0000000000BB0000-0x0000000000BC5000-memory.dmp

Filesize
84KB

Download
memory/4468-16-0x0000000000BB0000-0x0000000000BC5000-memory.dmp

Filesize
84KB

Download
memory/4468-17-0x0000000000BB0000-0x0000000000BC5000-memory.dmp

Filesize
84KB

Download
memory/4468-18-0x0000000000BB0000-0x0000000000BC5000-memory.dmp

Filesize
84KB

Download
memory/4864-4-0x0000000000400000-0x0000000000C17000-memory.dmp

Filesize
8.1MB

Download
memory/4864-2-0x0000000002960000-0x0000000002973000-memory.dmp

Filesize
76KB

Download
memory/4864-7-0x0000000000400000-0x0000000000C17000-memory.dmp

Filesize
8.1MB

Download
memory/4864-8-0x0000000002960000-0x0000000002973000-memory.dmp

Filesize
76KB

Download
memory/4864-1-0x0000000000DC0000-0x0000000000EC0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads