tofsee | 3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460

General

Target

026f086162e7d6d864ca4dc744149bc0_JaffaCakes118.exe
Size

10.5MB
MD5

026f086162e7d6d864ca4dc744149bc0
SHA1

cc81af6e0d8bd8c89126f509ccb5714cce8a3ef0
SHA256

3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460
SHA512

ff7ba4526233eb5a7e6dfa4673bfe0dc9b354a9960c23822267cab62c1571139e93c3919d8bf38bd1afd58b147ea15a2fdc1ad6b92f2e0fd2e65b14847cdebf4
SSDEEP

49152:DkHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHn:

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.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
1508	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\lnxeaeri\ImagePath = "C:\\Windows\\SysWOW64\\lnxeaeri\\inxnbg.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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	026f086162e7d6d864ca4dc744149bc0_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
1248	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2668	inxnbg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2668 set thread context of 1248	2668	inxnbg.exe	108

Launches sc.exe 3 IoCs

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

pid	Process
2856	sc.exe
4820	sc.exe
1164	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
3044	1788	WerFault.exe	83
3652	2668	WerFault.exe	102

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1788 wrote to memory of 2168	1788	026f086162e7d6d864ca4dc744149bc0_JaffaCakes118.exe	88
PID 1788 wrote to memory of 2168	1788	026f086162e7d6d864ca4dc744149bc0_JaffaCakes118.exe	88
PID 1788 wrote to memory of 2168	1788	026f086162e7d6d864ca4dc744149bc0_JaffaCakes118.exe	88
PID 1788 wrote to memory of 3624	1788	026f086162e7d6d864ca4dc744149bc0_JaffaCakes118.exe	92
PID 1788 wrote to memory of 3624	1788	026f086162e7d6d864ca4dc744149bc0_JaffaCakes118.exe	92
PID 1788 wrote to memory of 3624	1788	026f086162e7d6d864ca4dc744149bc0_JaffaCakes118.exe	92
PID 1788 wrote to memory of 2856	1788	026f086162e7d6d864ca4dc744149bc0_JaffaCakes118.exe	94
PID 1788 wrote to memory of 2856	1788	026f086162e7d6d864ca4dc744149bc0_JaffaCakes118.exe	94
PID 1788 wrote to memory of 2856	1788	026f086162e7d6d864ca4dc744149bc0_JaffaCakes118.exe	94
PID 1788 wrote to memory of 4820	1788	026f086162e7d6d864ca4dc744149bc0_JaffaCakes118.exe	98
PID 1788 wrote to memory of 4820	1788	026f086162e7d6d864ca4dc744149bc0_JaffaCakes118.exe	98
PID 1788 wrote to memory of 4820	1788	026f086162e7d6d864ca4dc744149bc0_JaffaCakes118.exe	98
PID 1788 wrote to memory of 1164	1788	026f086162e7d6d864ca4dc744149bc0_JaffaCakes118.exe	100
PID 1788 wrote to memory of 1164	1788	026f086162e7d6d864ca4dc744149bc0_JaffaCakes118.exe	100
PID 1788 wrote to memory of 1164	1788	026f086162e7d6d864ca4dc744149bc0_JaffaCakes118.exe	100
PID 1788 wrote to memory of 1508	1788	026f086162e7d6d864ca4dc744149bc0_JaffaCakes118.exe	103
PID 1788 wrote to memory of 1508	1788	026f086162e7d6d864ca4dc744149bc0_JaffaCakes118.exe	103
PID 1788 wrote to memory of 1508	1788	026f086162e7d6d864ca4dc744149bc0_JaffaCakes118.exe	103
PID 2668 wrote to memory of 1248	2668	inxnbg.exe	108
PID 2668 wrote to memory of 1248	2668	inxnbg.exe	108
PID 2668 wrote to memory of 1248	2668	inxnbg.exe	108
PID 2668 wrote to memory of 1248	2668	inxnbg.exe	108
PID 2668 wrote to memory of 1248	2668	inxnbg.exe	108

C:\Users\Admin\AppData\Local\Temp\026f086162e7d6d864ca4dc744149bc0_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\026f086162e7d6d864ca4dc744149bc0_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1788
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lnxeaeri\
  2⤵
  PID:2168
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\inxnbg.exe" C:\Windows\SysWOW64\lnxeaeri\
  2⤵
  PID:3624
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create lnxeaeri binPath= "C:\Windows\SysWOW64\lnxeaeri\inxnbg.exe /d\"C:\Users\Admin\AppData\Local\Temp\026f086162e7d6d864ca4dc744149bc0_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:2856
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description lnxeaeri "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:4820
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start lnxeaeri
  2⤵
  - Launches sc.exe
  PID:1164
- 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:1508
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1788 -s 596
  2⤵
  - Program crash
  PID:3044

C:\Windows\SysWOW64\lnxeaeri\inxnbg.exe
C:\Windows\SysWOW64\lnxeaeri\inxnbg.exe /d"C:\Users\Admin\AppData\Local\Temp\026f086162e7d6d864ca4dc744149bc0_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2668
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:1248
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2668 -s 520
  2⤵
  - Program crash
  PID:3652

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1788 -ip 1788
1⤵
PID:1936

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 2668 -ip 2668
1⤵
PID:848

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\inxnbg.exe

Filesize
5.9MB

MD5
bfc847ee9dc9d88556c9351e6f18f04b

SHA1
d3aa2af9ed6c3728b3f0ab09c5afd2a81c815dcc

SHA256
3af00ce743d9e3e8eb0fd77785229d35ed0db6fe2ee2f6634798bcb76297a74a

SHA512
4eaa16a052885e52f037ba3119bf70cd5f6067503c8caeb3610fa5f8a503826db49712cf39f53f60a075b3185aa9c22efe2886e88a562368555411e405944917

Download Submit
C:\Windows\SysWOW64\lnxeaeri\inxnbg.exe

Filesize
6.2MB

MD5
d8d99b914a09f72424eb81e83a7cede7

SHA1
0000953f1a09fc0c866fbae4c8d5a09f2efd60db

SHA256
e5bb86447cf5e7e3e190ce53c44bf1692582f8520a271e07046f134acdf2805b

SHA512
4386a7c3d3596e97cdf727a0eef79538983f0baf7bf55aa3c1156b3db504023b5ce555e814d5cc758669670fea6ba8067c9c8e9adc08db7292954d89f8f56499

Download Submit
memory/1248-10-0x00000000008A0000-0x00000000008B5000-memory.dmp

Filesize
84KB

Download
memory/1248-19-0x00000000008A0000-0x00000000008B5000-memory.dmp

Filesize
84KB

Download
memory/1248-16-0x00000000008A0000-0x00000000008B5000-memory.dmp

Filesize
84KB

Download
memory/1248-17-0x00000000008A0000-0x00000000008B5000-memory.dmp

Filesize
84KB

Download
memory/1248-15-0x00000000008A0000-0x00000000008B5000-memory.dmp

Filesize
84KB

Download
memory/1788-8-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/1788-1-0x0000000000920000-0x0000000000A20000-memory.dmp

Filesize
1024KB

Download
memory/1788-9-0x00000000008F0000-0x0000000000903000-memory.dmp

Filesize
76KB

Download
memory/1788-4-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/1788-2-0x00000000008F0000-0x0000000000903000-memory.dmp

Filesize
76KB

Download
memory/2668-13-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/2668-11-0x0000000000800000-0x0000000000900000-memory.dmp

Filesize
1024KB

Download
memory/2668-18-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads