tofsee | ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2

General

Target

ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe
Size

98KB
MD5

e93b8f5dc41f87a69fcf19115e985860
SHA1

51c55e7ee1d68c26918c1d6e5082dd60f08cde6d
SHA256

ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2
SHA512

787bfdc8fad1d9cdf52f58d07ce91fab86f5b9a77891523722e1e71fb1087ee43fa07d1557158ce4b6fb982d30c2a208103c0d032b7bd6a3cec1254ff0c1b081
SSDEEP

1536:DOoZ86iHPT3qqj7XHLLvXArePDNlv9AEQKzcVsN9+GUROW3zC1hDaMrAJg7Ub+SJ:DdjsnvXtNlebocVsnUROMzC1NAJQO

Score

10^/10

tofsee discovery persistence trojan

Malware Config

Extracted

Family

tofsee

C2

64.20.54.234

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:

ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe

Executes dropped EXE 2 IoCs

Processes:

punhs.exepunhs.exe

pid process

4616 punhs.exe
2336 punhs.exe

pid	process
4616	punhs.exe
2336	punhs.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MSConfig = "\"C:\\Users\\Admin\\punhs.exe\" /r"	ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exepunhs.exepunhs.exe

description	pid	process	target process
PID 768 set thread context of 4004	768	ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe	ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe
PID 4616 set thread context of 2336	4616	punhs.exe	punhs.exe
PID 2336 set thread context of 4104	2336	punhs.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

4668 4104 WerFault.exe svchost.exe

pid	pid_target	process	target process
4668	4104	WerFault.exe	svchost.exe

System Location Discovery: System Language Discovery 1 TTPs 6 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:

ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exepunhs.exepunhs.execmd.exesvchost.exeab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	punhs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	punhs.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	ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe

Suspicious use of UnmapMainImage 1 IoCs

Processes:

ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe

pid process

768 ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe

pid	process
768	ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe

Suspicious use of WriteProcessMemory 27 IoCs

Processes:

ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exeab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exepunhs.exepunhs.exe

description	pid	process	target process
PID 768 wrote to memory of 4004	768	ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe	ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe
PID 768 wrote to memory of 4004	768	ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe	ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe
PID 768 wrote to memory of 4004	768	ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe	ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe
PID 768 wrote to memory of 4004	768	ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe	ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe
PID 768 wrote to memory of 4004	768	ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe	ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe
PID 768 wrote to memory of 4004	768	ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe	ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe
PID 768 wrote to memory of 4004	768	ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe	ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe
PID 768 wrote to memory of 4004	768	ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe	ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe
PID 4004 wrote to memory of 4616	4004	ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe	punhs.exe
PID 4004 wrote to memory of 4616	4004	ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe	punhs.exe
PID 4004 wrote to memory of 4616	4004	ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe	punhs.exe
PID 4616 wrote to memory of 2336	4616	punhs.exe	punhs.exe
PID 4616 wrote to memory of 2336	4616	punhs.exe	punhs.exe
PID 4616 wrote to memory of 2336	4616	punhs.exe	punhs.exe
PID 4616 wrote to memory of 2336	4616	punhs.exe	punhs.exe
PID 4616 wrote to memory of 2336	4616	punhs.exe	punhs.exe
PID 4616 wrote to memory of 2336	4616	punhs.exe	punhs.exe
PID 4616 wrote to memory of 2336	4616	punhs.exe	punhs.exe
PID 4616 wrote to memory of 2336	4616	punhs.exe	punhs.exe
PID 2336 wrote to memory of 4104	2336	punhs.exe	svchost.exe
PID 2336 wrote to memory of 4104	2336	punhs.exe	svchost.exe
PID 2336 wrote to memory of 4104	2336	punhs.exe	svchost.exe
PID 2336 wrote to memory of 4104	2336	punhs.exe	svchost.exe
PID 2336 wrote to memory of 4104	2336	punhs.exe	svchost.exe
PID 4004 wrote to memory of 4288	4004	ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe	cmd.exe
PID 4004 wrote to memory of 4288	4004	ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe	cmd.exe
PID 4004 wrote to memory of 4288	4004	ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe
"C:\Users\Admin\AppData\Local\Temp\ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:768
- C:\Users\Admin\AppData\Local\Temp\ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe
  "C:\Users\Admin\AppData\Local\Temp\ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2N.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4004
- - C:\Users\Admin\punhs.exe
    "C:\Users\Admin\punhs.exe" /r
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4616
  - - C:\Users\Admin\punhs.exe
      "C:\Users\Admin\punhs.exe" /r
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2336
    - - C:\Windows\SysWOW64\svchost.exe
        
        svchost.exe
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:4104
      - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4104 -s 320
        6⤵
        Program crash
        
        PID:4668
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\7002.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4288

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4104 -ip 4104
1⤵
PID:3012

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\7002.bat

Filesize
136B

MD5
919f401f1e310780e191647bc128985d

SHA1
a91e781971b889d1f625ed8c2a3c7a2effcabca6

SHA256
5a0edabc7e792df9004faeda0755e02459beccb031ea07ef8213e2e8b7073953

SHA512
76e975ca11f1fdd1e20ccd92fb108dd6219714fdcb06cfdc688514722142a49180eeec8dbae34c1b30757c12b617887153fa5cebef85bcf4addcb9814f11eb1b

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

Filesize
98KB

MD5
e93b8f5dc41f87a69fcf19115e985860

SHA1
51c55e7ee1d68c26918c1d6e5082dd60f08cde6d

SHA256
ab2b8fecd3eabfd9fb63c8fc11b4fb1dd1c439517a1290853af9897d313536e2

SHA512
787bfdc8fad1d9cdf52f58d07ce91fab86f5b9a77891523722e1e71fb1087ee43fa07d1557158ce4b6fb982d30c2a208103c0d032b7bd6a3cec1254ff0c1b081

Download Submit
memory/2336-12-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/4004-0-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/4004-2-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/4004-23-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/4104-26-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/4104-27-0x0000000000590000-0x0000000000591000-memory.dmp

Filesize
4KB

Download
memory/4104-28-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/4104-29-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads