tofsee | e6eba455a3dec3f3b4f52ec852f0335b4955b6508d9d6d6b90e9c21ab293cf0a

General

Target

NEAS.e6eba455a3dec3f3b4f52ec852f0335b4955b6508d9d6d6b90e9c21ab293cf0aexe_JC.exe
Size

202KB
MD5

9388dbeb6fdf9003fbc7ca159cfda275
SHA1

ff1d836222240de90ad3d75a279d9cc565869590
SHA256

e6eba455a3dec3f3b4f52ec852f0335b4955b6508d9d6d6b90e9c21ab293cf0a
SHA512

98ece8a30b01c71aacd64b9e3b0d5ffe92f5a13b4a73365dabba36be4acf11f331ee424a09b05c48279a810a77e9aff05440c201072082004b68bcdba3dea4c1
SSDEEP

3072:pRcFAhzF4JmYYa2Nurb9jNbpDp6JUmu5BkIs/Vr:MA/AZD3LrFmzI2V

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

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
2984	netsh.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-1-5-21-1926387074-3400613176-3566796709-1000\Control Panel\International\Geo\Nation	NEAS.e6eba455a3dec3f3b4f52ec852f0335b4955b6508d9d6d6b90e9c21ab293cf0aexe_JC.exe

Executes dropped EXE 1 IoCs

pid	Process
2948	hkhartnd.exe

Launches sc.exe 3 IoCs

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

pid	Process
2136	sc.exe
4688	sc.exe
3584	sc.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1044	5068	WerFault.exe	84

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 5068 wrote to memory of 4528	5068	NEAS.e6eba455a3dec3f3b4f52ec852f0335b4955b6508d9d6d6b90e9c21ab293cf0aexe_JC.exe	98
PID 5068 wrote to memory of 4528	5068	NEAS.e6eba455a3dec3f3b4f52ec852f0335b4955b6508d9d6d6b90e9c21ab293cf0aexe_JC.exe	98
PID 5068 wrote to memory of 4528	5068	NEAS.e6eba455a3dec3f3b4f52ec852f0335b4955b6508d9d6d6b90e9c21ab293cf0aexe_JC.exe	98
PID 5068 wrote to memory of 5096	5068	NEAS.e6eba455a3dec3f3b4f52ec852f0335b4955b6508d9d6d6b90e9c21ab293cf0aexe_JC.exe	100
PID 5068 wrote to memory of 5096	5068	NEAS.e6eba455a3dec3f3b4f52ec852f0335b4955b6508d9d6d6b90e9c21ab293cf0aexe_JC.exe	100
PID 5068 wrote to memory of 5096	5068	NEAS.e6eba455a3dec3f3b4f52ec852f0335b4955b6508d9d6d6b90e9c21ab293cf0aexe_JC.exe	100
PID 5068 wrote to memory of 2136	5068	NEAS.e6eba455a3dec3f3b4f52ec852f0335b4955b6508d9d6d6b90e9c21ab293cf0aexe_JC.exe	102
PID 5068 wrote to memory of 2136	5068	NEAS.e6eba455a3dec3f3b4f52ec852f0335b4955b6508d9d6d6b90e9c21ab293cf0aexe_JC.exe	102
PID 5068 wrote to memory of 2136	5068	NEAS.e6eba455a3dec3f3b4f52ec852f0335b4955b6508d9d6d6b90e9c21ab293cf0aexe_JC.exe	102
PID 5068 wrote to memory of 4688	5068	NEAS.e6eba455a3dec3f3b4f52ec852f0335b4955b6508d9d6d6b90e9c21ab293cf0aexe_JC.exe	104
PID 5068 wrote to memory of 4688	5068	NEAS.e6eba455a3dec3f3b4f52ec852f0335b4955b6508d9d6d6b90e9c21ab293cf0aexe_JC.exe	104
PID 5068 wrote to memory of 4688	5068	NEAS.e6eba455a3dec3f3b4f52ec852f0335b4955b6508d9d6d6b90e9c21ab293cf0aexe_JC.exe	104
PID 5068 wrote to memory of 3584	5068	NEAS.e6eba455a3dec3f3b4f52ec852f0335b4955b6508d9d6d6b90e9c21ab293cf0aexe_JC.exe	106
PID 5068 wrote to memory of 3584	5068	NEAS.e6eba455a3dec3f3b4f52ec852f0335b4955b6508d9d6d6b90e9c21ab293cf0aexe_JC.exe	106
PID 5068 wrote to memory of 3584	5068	NEAS.e6eba455a3dec3f3b4f52ec852f0335b4955b6508d9d6d6b90e9c21ab293cf0aexe_JC.exe	106
PID 5068 wrote to memory of 2984	5068	NEAS.e6eba455a3dec3f3b4f52ec852f0335b4955b6508d9d6d6b90e9c21ab293cf0aexe_JC.exe	109
PID 5068 wrote to memory of 2984	5068	NEAS.e6eba455a3dec3f3b4f52ec852f0335b4955b6508d9d6d6b90e9c21ab293cf0aexe_JC.exe	109
PID 5068 wrote to memory of 2984	5068	NEAS.e6eba455a3dec3f3b4f52ec852f0335b4955b6508d9d6d6b90e9c21ab293cf0aexe_JC.exe	109

C:\Users\Admin\AppData\Local\Temp\NEAS.e6eba455a3dec3f3b4f52ec852f0335b4955b6508d9d6d6b90e9c21ab293cf0aexe_JC.exe
"C:\Users\Admin\AppData\Local\Temp\NEAS.e6eba455a3dec3f3b4f52ec852f0335b4955b6508d9d6d6b90e9c21ab293cf0aexe_JC.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5068
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\joleomxd\
  2⤵
  PID:4528
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\hkhartnd.exe" C:\Windows\SysWOW64\joleomxd\
  2⤵
  PID:5096
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create joleomxd binPath= "C:\Windows\SysWOW64\joleomxd\hkhartnd.exe /d\"C:\Users\Admin\AppData\Local\Temp\NEAS.e6eba455a3dec3f3b4f52ec852f0335b4955b6508d9d6d6b90e9c21ab293cf0aexe_JC.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:2136
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description joleomxd "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:4688
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start joleomxd
  2⤵
  - Launches sc.exe
  PID:3584
- 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:2984
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5068 -s 1040
  2⤵
  - Program crash
  PID:1044

C:\Windows\SysWOW64\joleomxd\hkhartnd.exe
C:\Windows\SysWOW64\joleomxd\hkhartnd.exe /d"C:\Users\Admin\AppData\Local\Temp\NEAS.e6eba455a3dec3f3b4f52ec852f0335b4955b6508d9d6d6b90e9c21ab293cf0aexe_JC.exe"
1⤵
- Executes dropped EXE
PID:2948

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 5068 -ip 5068
1⤵
PID:2740

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Privilege Escalation

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Defense Evasion

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\hkhartnd.exe

Filesize
12.9MB

MD5
5702997c7061633983cf97bfecbbf781

SHA1
85c9ea0242c53cd558e531f57b2b55dc8a864c3e

SHA256
c032a040c024415862862c1003e08da45972d384cea925e9db3df376640fb3e7

SHA512
0f233f708cd27f551a0e32bf32df96e897c24077cd5266a1b070dbeaaaf0fadda8dee60c065e0a4485ff7e799e2392936c01981f6ec692a6469007def7acedf3

Download Submit
C:\Windows\SysWOW64\joleomxd\hkhartnd.exe

Filesize
12.9MB

MD5
5702997c7061633983cf97bfecbbf781

SHA1
85c9ea0242c53cd558e531f57b2b55dc8a864c3e

SHA256
c032a040c024415862862c1003e08da45972d384cea925e9db3df376640fb3e7

SHA512
0f233f708cd27f551a0e32bf32df96e897c24077cd5266a1b070dbeaaaf0fadda8dee60c065e0a4485ff7e799e2392936c01981f6ec692a6469007def7acedf3

Download Submit
memory/5068-1-0x0000000000630000-0x0000000000730000-memory.dmp

Filesize
1024KB

Download
memory/5068-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/5068-3-0x0000000000400000-0x00000000005A9000-memory.dmp

Filesize
1.7MB

Download
memory/5068-6-0x0000000000400000-0x00000000005A9000-memory.dmp

Filesize
1.7MB

Download
memory/5068-9-0x0000000000400000-0x00000000005A9000-memory.dmp

Filesize
1.7MB

Download
memory/5068-10-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads