tofsee | 4a98211c5559002c943be44e52f37e9362b06f3e384625735e2170ef215c7edc

General

Target

214ba52c1fe0615bdf8b110de5a54800_JaffaCakes118.exe
Size

106KB
MD5

214ba52c1fe0615bdf8b110de5a54800
SHA1

8d14c8471ad2ddea020c6283118c8031ce7f7194
SHA256

4a98211c5559002c943be44e52f37e9362b06f3e384625735e2170ef215c7edc
SHA512

d7f95da24b99e6e347cd64c508460f8b747cc110d3fef4667d59bd8894a97f72a4dab5b11b9f48649185f0248170b38b77ab5ae3d21da2d9665cbd347d763599
SSDEEP

1536:pDfF/yYugpJ+BsxKlb0Tz7OOFGHWy4TmQsdLB8Hdez8VmF2jbxWGq6:pDf1y0pJTxKZUOOcICBU+QS2jbxWGq

Score

10^/10

tofsee discovery persistence trojan

Malware Config

Extracted

Family

tofsee

C2

91.218.38.211

188.130.237.71

185.25.48.10

188.165.132.183

rgtryhbgddtyh.biz

wertdghbyrukl.ch

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee

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:

214ba52c1fe0615bdf8b110de5a54800_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	214ba52c1fe0615bdf8b110de5a54800_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

wjobgtmu.exe

pid process

4720 wjobgtmu.exe

pid	process
4720	wjobgtmu.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

214ba52c1fe0615bdf8b110de5a54800_JaffaCakes118.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MSConfig = "\"C:\\Users\\Admin\\wjobgtmu.exe\""	214ba52c1fe0615bdf8b110de5a54800_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

wjobgtmu.exe

description pid process target process

PID 4720 set thread context of 724 4720 wjobgtmu.exe svchost.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3512 724 WerFault.exe svchost.exe

description	pid	process	target process
PID 4720 set thread context of 724	4720	wjobgtmu.exe	svchost.exe

pid	pid_target	process	target process
3512	724	WerFault.exe	svchost.exe

System Location Discovery: System Language Discovery 1 TTPs 4 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:

wjobgtmu.execmd.exesvchost.exe214ba52c1fe0615bdf8b110de5a54800_JaffaCakes118.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wjobgtmu.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	214ba52c1fe0615bdf8b110de5a54800_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

214ba52c1fe0615bdf8b110de5a54800_JaffaCakes118.exewjobgtmu.exe

description	pid	process	target process
PID 3172 wrote to memory of 4720	3172	214ba52c1fe0615bdf8b110de5a54800_JaffaCakes118.exe	wjobgtmu.exe
PID 3172 wrote to memory of 4720	3172	214ba52c1fe0615bdf8b110de5a54800_JaffaCakes118.exe	wjobgtmu.exe
PID 3172 wrote to memory of 4720	3172	214ba52c1fe0615bdf8b110de5a54800_JaffaCakes118.exe	wjobgtmu.exe
PID 4720 wrote to memory of 724	4720	wjobgtmu.exe	svchost.exe
PID 4720 wrote to memory of 724	4720	wjobgtmu.exe	svchost.exe
PID 4720 wrote to memory of 724	4720	wjobgtmu.exe	svchost.exe
PID 4720 wrote to memory of 724	4720	wjobgtmu.exe	svchost.exe
PID 4720 wrote to memory of 724	4720	wjobgtmu.exe	svchost.exe
PID 3172 wrote to memory of 4360	3172	214ba52c1fe0615bdf8b110de5a54800_JaffaCakes118.exe	cmd.exe
PID 3172 wrote to memory of 4360	3172	214ba52c1fe0615bdf8b110de5a54800_JaffaCakes118.exe	cmd.exe
PID 3172 wrote to memory of 4360	3172	214ba52c1fe0615bdf8b110de5a54800_JaffaCakes118.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\214ba52c1fe0615bdf8b110de5a54800_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\214ba52c1fe0615bdf8b110de5a54800_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3172
- C:\Users\Admin\wjobgtmu.exe
  "C:\Users\Admin\wjobgtmu.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4720
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:724
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 724 -s 356
      4⤵
      Program crash
      PID:3512
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\0638.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4360

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 724 -ip 724
1⤵
PID:3852

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

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

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\0638.bat

Filesize
266B

MD5
631dba645b394f476070d8122c086310

SHA1
21e58377c08cd2426b2f60207f9db84ef4b90aa9

SHA256
775f1519414f738178a0c108ff7e944b4ee8192bd274ff7dc6ea415cce47aa0c

SHA512
7e3d4f59ff2e1b05ec0fb57661a2b3d30279e94dc5aa77e99915f7391224e85fccc3ddbd9e169d01c9422dbdb5eb81ba9fd82a85cba1070cb0ae5def994028c7

Download Submit
C:\Users\Admin\wjobgtmu.exe

Filesize
48.1MB

MD5
988f5e3a98b78f337668376db86fda1b

SHA1
0b8d342ab927ed2b9f5ca0eec01b1707745b5aac

SHA256
8959fd2112b0a66d231bb713fe7550dbe2e534979872976236442d82bad4d70d

SHA512
082b722fb3753727a293439edc055917ee65b26167e2e713d62db94ba324a03ee44c514095d8109e7d4073a11e1699c260423cb37c884e5a8146b7d0f4bee30a

Download Submit
memory/724-18-0x0000000000110000-0x0000000000122000-memory.dmp

Filesize
72KB

Download
memory/724-30-0x0000000000110000-0x0000000000122000-memory.dmp

Filesize
72KB

Download
memory/724-29-0x0000000000110000-0x0000000000122000-memory.dmp

Filesize
72KB

Download
memory/724-28-0x00000000001F0000-0x00000000001F1000-memory.dmp

Filesize
4KB

Download
memory/724-11-0x0000000000110000-0x0000000000122000-memory.dmp

Filesize
72KB

Download
memory/724-14-0x0000000000110000-0x0000000000122000-memory.dmp

Filesize
72KB

Download
memory/3172-25-0x00000000021B0000-0x00000000021C2000-memory.dmp

Filesize
72KB

Download
memory/3172-23-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/3172-0-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/3172-2-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/3172-1-0x00000000021B0000-0x00000000021C2000-memory.dmp

Filesize
72KB

Download
memory/4720-17-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/4720-9-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/4720-10-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/4720-6-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads