tofsee | 4a65362140edf6266596e78a1b3617381d9e6654310eee10aa5206e364b73bc7

General

Target

9484d5c263bbb436280dc8c8c1872e44_JaffaCakes118.exe
Size

142KB
MD5

9484d5c263bbb436280dc8c8c1872e44
SHA1

a7e0a7a440f7fdb7f59bfc02a3fd5a01391e9786
SHA256

4a65362140edf6266596e78a1b3617381d9e6654310eee10aa5206e364b73bc7
SHA512

230774d0112ea62d6821d9672a8906be05251018e9ef193c5695c72afd409e8b718e95c7d4645b2317346d2484852ab47157a4b046ba10aa2114af8ff816c99a
SSDEEP

3072:NO8/FLfg16rzTkYfiL2+jKfgi4m5nuGFU6W6WNE6b3A:X9rzwFLnKP46uC

Score

10^/10

tofsee evasion execution persistence trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002
Modifies Windows Firewall 2 TTPs 1 IoCs
evasion

Windows Service
T1543.003

Disable or Modify System Firewall
T1562.004

Processes:

netsh.exe

pid process

4200 netsh.exe

pid	process
4200	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\diqctqpw\ImagePath = "C:\\Windows\\SysWOW64\\diqctqpw\\snrtwfeq.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

Processes:

9484d5c263bbb436280dc8c8c1872e44_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	9484d5c263bbb436280dc8c8c1872e44_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1540 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

snrtwfeq.exe

pid process

2256 snrtwfeq.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

snrtwfeq.exe

description pid process target process

PID 2256 set thread context of 1540 2256 snrtwfeq.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

3224 sc.exe
4844 sc.exe
3000 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1540	svchost.exe

pid	process
2256	snrtwfeq.exe

description	pid	process	target process
PID 2256 set thread context of 1540	2256	snrtwfeq.exe	svchost.exe

pid	process
3224	sc.exe
4844	sc.exe
3000	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

9484d5c263bbb436280dc8c8c1872e44_JaffaCakes118.exesnrtwfeq.exe

description	pid	process	target process
PID 552 wrote to memory of 532	552	9484d5c263bbb436280dc8c8c1872e44_JaffaCakes118.exe	cmd.exe
PID 552 wrote to memory of 532	552	9484d5c263bbb436280dc8c8c1872e44_JaffaCakes118.exe	cmd.exe
PID 552 wrote to memory of 532	552	9484d5c263bbb436280dc8c8c1872e44_JaffaCakes118.exe	cmd.exe
PID 552 wrote to memory of 3172	552	9484d5c263bbb436280dc8c8c1872e44_JaffaCakes118.exe	cmd.exe
PID 552 wrote to memory of 3172	552	9484d5c263bbb436280dc8c8c1872e44_JaffaCakes118.exe	cmd.exe
PID 552 wrote to memory of 3172	552	9484d5c263bbb436280dc8c8c1872e44_JaffaCakes118.exe	cmd.exe
PID 552 wrote to memory of 3224	552	9484d5c263bbb436280dc8c8c1872e44_JaffaCakes118.exe	sc.exe
PID 552 wrote to memory of 3224	552	9484d5c263bbb436280dc8c8c1872e44_JaffaCakes118.exe	sc.exe
PID 552 wrote to memory of 3224	552	9484d5c263bbb436280dc8c8c1872e44_JaffaCakes118.exe	sc.exe
PID 552 wrote to memory of 4844	552	9484d5c263bbb436280dc8c8c1872e44_JaffaCakes118.exe	sc.exe
PID 552 wrote to memory of 4844	552	9484d5c263bbb436280dc8c8c1872e44_JaffaCakes118.exe	sc.exe
PID 552 wrote to memory of 4844	552	9484d5c263bbb436280dc8c8c1872e44_JaffaCakes118.exe	sc.exe
PID 552 wrote to memory of 3000	552	9484d5c263bbb436280dc8c8c1872e44_JaffaCakes118.exe	sc.exe
PID 552 wrote to memory of 3000	552	9484d5c263bbb436280dc8c8c1872e44_JaffaCakes118.exe	sc.exe
PID 552 wrote to memory of 3000	552	9484d5c263bbb436280dc8c8c1872e44_JaffaCakes118.exe	sc.exe
PID 552 wrote to memory of 4200	552	9484d5c263bbb436280dc8c8c1872e44_JaffaCakes118.exe	netsh.exe
PID 552 wrote to memory of 4200	552	9484d5c263bbb436280dc8c8c1872e44_JaffaCakes118.exe	netsh.exe
PID 552 wrote to memory of 4200	552	9484d5c263bbb436280dc8c8c1872e44_JaffaCakes118.exe	netsh.exe
PID 2256 wrote to memory of 1540	2256	snrtwfeq.exe	svchost.exe
PID 2256 wrote to memory of 1540	2256	snrtwfeq.exe	svchost.exe
PID 2256 wrote to memory of 1540	2256	snrtwfeq.exe	svchost.exe
PID 2256 wrote to memory of 1540	2256	snrtwfeq.exe	svchost.exe
PID 2256 wrote to memory of 1540	2256	snrtwfeq.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\9484d5c263bbb436280dc8c8c1872e44_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\9484d5c263bbb436280dc8c8c1872e44_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:552
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\diqctqpw\
  2⤵
  PID:532
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\snrtwfeq.exe" C:\Windows\SysWOW64\diqctqpw\
  2⤵
  PID:3172
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create diqctqpw binPath= "C:\Windows\SysWOW64\diqctqpw\snrtwfeq.exe /d\"C:\Users\Admin\AppData\Local\Temp\9484d5c263bbb436280dc8c8c1872e44_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:3224
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description diqctqpw "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:4844
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start diqctqpw
  2⤵
  - Launches sc.exe
  PID:3000
- 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:4200

C:\Windows\SysWOW64\diqctqpw\snrtwfeq.exe
C:\Windows\SysWOW64\diqctqpw\snrtwfeq.exe /d"C:\Users\Admin\AppData\Local\Temp\9484d5c263bbb436280dc8c8c1872e44_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2256
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:1540

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

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\snrtwfeq.exe

Filesize
13.9MB

MD5
563b18656515bc4ca79a85ff88041304

SHA1
5ce1b6a4784568b73e79b33aea1ebde46e1861ad

SHA256
b205bfb44882ed92257e94b2141f1e5d9818a033102e9ec3e2c794792fdc1826

SHA512
bf105f7a7118d6701c61beaaa8a784c42a344be04f6a06912f5add8317b2c8e403ac831ca56fc0189eca3f50b362aea5f276d2b6711dbeca7dbe57d920747c13

Download Submit
memory/552-2-0x00000000005E0000-0x00000000005E1000-memory.dmp

Filesize
4KB

Download
memory/552-1-0x00000000005D0000-0x00000000005D1000-memory.dmp

Filesize
4KB

Download
memory/552-0-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/552-6-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1540-8-0x0000000000B60000-0x0000000000B75000-memory.dmp

Filesize
84KB

Download
memory/1540-11-0x0000000000B60000-0x0000000000B75000-memory.dmp

Filesize
84KB

Download
memory/1540-13-0x0000000000B60000-0x0000000000B75000-memory.dmp

Filesize
84KB

Download
memory/1540-14-0x0000000000B60000-0x0000000000B75000-memory.dmp

Filesize
84KB

Download
memory/1540-15-0x0000000000B60000-0x0000000000B75000-memory.dmp

Filesize
84KB

Download
memory/2256-7-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2256-12-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads