tofsee | d700078220b88dcc6ca5f6d644bda00b0f1c068375733f0cc861610b9de9ea00

General

Target

4a9cf6d94bdbb5cc8a9aa649d881aa3f.exe
Size

14.7MB
MD5

4a9cf6d94bdbb5cc8a9aa649d881aa3f
SHA1

2264dfff92e60df1c88de176cb727b02cab2ead4
SHA256

d700078220b88dcc6ca5f6d644bda00b0f1c068375733f0cc861610b9de9ea00
SHA512

461591c323b9ac923654e4e05181efa85e13e53bdabf9355a7ad5fca91bb7d38a1c3e50d15006e043b39345760db77f1902c1ba21c14db867b7e1a587ea32be9
SSDEEP

393216:pmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmr:pmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmr

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

194.61.3.129

defeatwax.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 1 TTPs 1 IoCs

evasion

Windows Service

T1543.003

pid	Process
4512	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\nixuhgwi\ImagePath = "C:\\Windows\\SysWOW64\\nixuhgwi\\hltmflaz.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-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation	4a9cf6d94bdbb5cc8a9aa649d881aa3f.exe

Deletes itself 1 IoCs

pid	Process
544	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1840	hltmflaz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1840 set thread context of 544	1840	hltmflaz.exe	112

Launches sc.exe 3 IoCs

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

pid	Process
3492	sc.exe
3220	sc.exe
2968	sc.exe

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

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1780	3224	WerFault.exe	87
4412	1840	WerFault.exe	107

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3224 wrote to memory of 3952	3224	4a9cf6d94bdbb5cc8a9aa649d881aa3f.exe	93
PID 3224 wrote to memory of 3952	3224	4a9cf6d94bdbb5cc8a9aa649d881aa3f.exe	93
PID 3224 wrote to memory of 3952	3224	4a9cf6d94bdbb5cc8a9aa649d881aa3f.exe	93
PID 3224 wrote to memory of 3348	3224	4a9cf6d94bdbb5cc8a9aa649d881aa3f.exe	95
PID 3224 wrote to memory of 3348	3224	4a9cf6d94bdbb5cc8a9aa649d881aa3f.exe	95
PID 3224 wrote to memory of 3348	3224	4a9cf6d94bdbb5cc8a9aa649d881aa3f.exe	95
PID 3224 wrote to memory of 3492	3224	4a9cf6d94bdbb5cc8a9aa649d881aa3f.exe	97
PID 3224 wrote to memory of 3492	3224	4a9cf6d94bdbb5cc8a9aa649d881aa3f.exe	97
PID 3224 wrote to memory of 3492	3224	4a9cf6d94bdbb5cc8a9aa649d881aa3f.exe	97
PID 3224 wrote to memory of 3220	3224	4a9cf6d94bdbb5cc8a9aa649d881aa3f.exe	100
PID 3224 wrote to memory of 3220	3224	4a9cf6d94bdbb5cc8a9aa649d881aa3f.exe	100
PID 3224 wrote to memory of 3220	3224	4a9cf6d94bdbb5cc8a9aa649d881aa3f.exe	100
PID 3224 wrote to memory of 2968	3224	4a9cf6d94bdbb5cc8a9aa649d881aa3f.exe	102
PID 3224 wrote to memory of 2968	3224	4a9cf6d94bdbb5cc8a9aa649d881aa3f.exe	102
PID 3224 wrote to memory of 2968	3224	4a9cf6d94bdbb5cc8a9aa649d881aa3f.exe	102
PID 3224 wrote to memory of 4512	3224	4a9cf6d94bdbb5cc8a9aa649d881aa3f.exe	104
PID 3224 wrote to memory of 4512	3224	4a9cf6d94bdbb5cc8a9aa649d881aa3f.exe	104
PID 3224 wrote to memory of 4512	3224	4a9cf6d94bdbb5cc8a9aa649d881aa3f.exe	104
PID 1840 wrote to memory of 544	1840	hltmflaz.exe	112
PID 1840 wrote to memory of 544	1840	hltmflaz.exe	112
PID 1840 wrote to memory of 544	1840	hltmflaz.exe	112
PID 1840 wrote to memory of 544	1840	hltmflaz.exe	112
PID 1840 wrote to memory of 544	1840	hltmflaz.exe	112

C:\Users\Admin\AppData\Local\Temp\4a9cf6d94bdbb5cc8a9aa649d881aa3f.exe
"C:\Users\Admin\AppData\Local\Temp\4a9cf6d94bdbb5cc8a9aa649d881aa3f.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3224
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nixuhgwi\
  2⤵
  PID:3952
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\hltmflaz.exe" C:\Windows\SysWOW64\nixuhgwi\
  2⤵
  PID:3348
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nixuhgwi binPath= "C:\Windows\SysWOW64\nixuhgwi\hltmflaz.exe /d\"C:\Users\Admin\AppData\Local\Temp\4a9cf6d94bdbb5cc8a9aa649d881aa3f.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:3492
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nixuhgwi "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:3220
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nixuhgwi
  2⤵
  - Launches sc.exe
  PID:2968
- 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:4512
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3224 -s 1028
  2⤵
  - Program crash
  PID:1780

C:\Windows\SysWOW64\nixuhgwi\hltmflaz.exe
C:\Windows\SysWOW64\nixuhgwi\hltmflaz.exe /d"C:\Users\Admin\AppData\Local\Temp\4a9cf6d94bdbb5cc8a9aa649d881aa3f.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1840
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:544
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1840 -s 540
  2⤵
  - Program crash
  PID:4412

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3224 -ip 3224
1⤵
PID:3748

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 1840 -ip 1840
1⤵
PID:1536

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

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
4.2MB

MD5
2659c1cb4bbb18add52d47a9f5e2e1e6

SHA1
7d21cf61dc95e32d37a8e7961f76fbe7317ea95e

SHA256
af16995d7ceb2fbb504eaf140f3850d87c820496fc43dca212eae3b285123500

SHA512
1ac0b2e5bccdd2971a18a446e1806807c2b9be71f8d032bb65ba6b83222b36ee294dbe11999ac3b8e1dcb1adead6df8590c0a140dbc263f3eefc8a8b82189545

Download Submit
C:\Windows\SysWOW64\nixuhgwi\hltmflaz.exe

Filesize
618KB

MD5
c76709de1debdbfbaf8133ade36ecfa9

SHA1
f402f07e62587ab7c2dcf2b668e07ea13e7a9d9d

SHA256
ad7ee807772602aedf316817afa56387bae6531e8ba294d882c1ebcd84c41db7

SHA512
ad249b84da8c6bb5e5ed05badc04536ca7a6b583455e9699702380c2475873e3e2f633adc5eeee98f94112d031a04b0a82844e152d5385e874d48808a6c7b1f9

Download Submit
memory/544-17-0x0000000000120000-0x0000000000135000-memory.dmp

Filesize
84KB

Download
memory/544-20-0x0000000000120000-0x0000000000135000-memory.dmp

Filesize
84KB

Download
memory/544-19-0x0000000000120000-0x0000000000135000-memory.dmp

Filesize
84KB

Download
memory/544-14-0x0000000000120000-0x0000000000135000-memory.dmp

Filesize
84KB

Download
memory/1840-13-0x0000000000400000-0x000000000089C000-memory.dmp

Filesize
4.6MB

Download
memory/1840-18-0x0000000000400000-0x000000000089C000-memory.dmp

Filesize
4.6MB

Download
memory/1840-11-0x0000000000B70000-0x0000000000C70000-memory.dmp

Filesize
1024KB

Download
memory/1840-12-0x0000000000400000-0x000000000089C000-memory.dmp

Filesize
4.6MB

Download
memory/3224-10-0x0000000000930000-0x0000000000943000-memory.dmp

Filesize
76KB

Download
memory/3224-9-0x0000000000400000-0x000000000089C000-memory.dmp

Filesize
4.6MB

Download
memory/3224-1-0x0000000000960000-0x0000000000A60000-memory.dmp

Filesize
1024KB

Download
memory/3224-5-0x0000000000400000-0x000000000089C000-memory.dmp

Filesize
4.6MB

Download
memory/3224-2-0x0000000000930000-0x0000000000943000-memory.dmp

Filesize
76KB

Download
memory/3224-4-0x0000000000400000-0x000000000089C000-memory.dmp

Filesize
4.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads