tofsee | e0e94c3fafd615c50c084cf4d72bb8f98495ad99ec2408289ae47322748120f7

General

Target

f36423b40d7a0bbc75a9d05f0e324e72_JaffaCakes118.exe
Size

13.2MB
MD5

f36423b40d7a0bbc75a9d05f0e324e72
SHA1

31f80e7d1cea645b288db9835c5e52b23fa103b2
SHA256

e0e94c3fafd615c50c084cf4d72bb8f98495ad99ec2408289ae47322748120f7
SHA512

fc6118271567c7697b09d7c0ef7acc50cd1867768fd06302533f96b83009c3f7f566813f20f555d628a9d2fc7c9756ca0115f32d534add97c8c66a03ed48b7a7
SSDEEP

3072:Fdi8DS3tA2awlaR7/NDzFx2l0oHgBpMKwVTORO2j4UCtXGPjsjmw+V0+V0+V0+V+:a8DiApRRDzFxk0oHOpfws6Uprgp

Score

10^/10

tofsee evasion persistence trojan upx

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) 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

Processes:

netsh.exe

pid process

4876 netsh.exe

pid	process
4876	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\hdehcfwe\ImagePath = "C:\\Windows\\SysWOW64\\hdehcfwe\\omvwfbqm.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:

f36423b40d7a0bbc75a9d05f0e324e72_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	f36423b40d7a0bbc75a9d05f0e324e72_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

672 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

omvwfbqm.exe

pid process

2972 omvwfbqm.exe

pid	process
672	svchost.exe

pid	process
2972	omvwfbqm.exe

UPX packed file 1 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\omvwfbqm.exe	upx

Suspicious use of SetThreadContext 1 IoCs

Processes:

omvwfbqm.exe

description pid process target process

PID 2972 set thread context of 672 2972 omvwfbqm.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

3260 sc.exe
4748 sc.exe
4244 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

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

5108 2544 WerFault.exe f36423b40d7a0bbc75a9d05f0e324e72_JaffaCakes118.exe
2372 2972 WerFault.exe omvwfbqm.exe

description	pid	process	target process
PID 2972 set thread context of 672	2972	omvwfbqm.exe	svchost.exe

pid	process
3260	sc.exe
4748	sc.exe
4244	sc.exe

pid	pid_target	process	target process
5108	2544	WerFault.exe	f36423b40d7a0bbc75a9d05f0e324e72_JaffaCakes118.exe
2372	2972	WerFault.exe	omvwfbqm.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

f36423b40d7a0bbc75a9d05f0e324e72_JaffaCakes118.exeomvwfbqm.exe

description	pid	process	target process
PID 2544 wrote to memory of 3024	2544	f36423b40d7a0bbc75a9d05f0e324e72_JaffaCakes118.exe	cmd.exe
PID 2544 wrote to memory of 3024	2544	f36423b40d7a0bbc75a9d05f0e324e72_JaffaCakes118.exe	cmd.exe
PID 2544 wrote to memory of 3024	2544	f36423b40d7a0bbc75a9d05f0e324e72_JaffaCakes118.exe	cmd.exe
PID 2544 wrote to memory of 4788	2544	f36423b40d7a0bbc75a9d05f0e324e72_JaffaCakes118.exe	cmd.exe
PID 2544 wrote to memory of 4788	2544	f36423b40d7a0bbc75a9d05f0e324e72_JaffaCakes118.exe	cmd.exe
PID 2544 wrote to memory of 4788	2544	f36423b40d7a0bbc75a9d05f0e324e72_JaffaCakes118.exe	cmd.exe
PID 2544 wrote to memory of 3260	2544	f36423b40d7a0bbc75a9d05f0e324e72_JaffaCakes118.exe	sc.exe
PID 2544 wrote to memory of 3260	2544	f36423b40d7a0bbc75a9d05f0e324e72_JaffaCakes118.exe	sc.exe
PID 2544 wrote to memory of 3260	2544	f36423b40d7a0bbc75a9d05f0e324e72_JaffaCakes118.exe	sc.exe
PID 2544 wrote to memory of 4748	2544	f36423b40d7a0bbc75a9d05f0e324e72_JaffaCakes118.exe	sc.exe
PID 2544 wrote to memory of 4748	2544	f36423b40d7a0bbc75a9d05f0e324e72_JaffaCakes118.exe	sc.exe
PID 2544 wrote to memory of 4748	2544	f36423b40d7a0bbc75a9d05f0e324e72_JaffaCakes118.exe	sc.exe
PID 2544 wrote to memory of 4244	2544	f36423b40d7a0bbc75a9d05f0e324e72_JaffaCakes118.exe	sc.exe
PID 2544 wrote to memory of 4244	2544	f36423b40d7a0bbc75a9d05f0e324e72_JaffaCakes118.exe	sc.exe
PID 2544 wrote to memory of 4244	2544	f36423b40d7a0bbc75a9d05f0e324e72_JaffaCakes118.exe	sc.exe
PID 2544 wrote to memory of 4876	2544	f36423b40d7a0bbc75a9d05f0e324e72_JaffaCakes118.exe	netsh.exe
PID 2544 wrote to memory of 4876	2544	f36423b40d7a0bbc75a9d05f0e324e72_JaffaCakes118.exe	netsh.exe
PID 2544 wrote to memory of 4876	2544	f36423b40d7a0bbc75a9d05f0e324e72_JaffaCakes118.exe	netsh.exe
PID 2972 wrote to memory of 672	2972	omvwfbqm.exe	svchost.exe
PID 2972 wrote to memory of 672	2972	omvwfbqm.exe	svchost.exe
PID 2972 wrote to memory of 672	2972	omvwfbqm.exe	svchost.exe
PID 2972 wrote to memory of 672	2972	omvwfbqm.exe	svchost.exe
PID 2972 wrote to memory of 672	2972	omvwfbqm.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f36423b40d7a0bbc75a9d05f0e324e72_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f36423b40d7a0bbc75a9d05f0e324e72_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2544

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hdehcfwe\
2⤵
PID:3024

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\omvwfbqm.exe" C:\Windows\SysWOW64\hdehcfwe\
2⤵
PID:4788

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create hdehcfwe binPath= "C:\Windows\SysWOW64\hdehcfwe\omvwfbqm.exe /d\"C:\Users\Admin\AppData\Local\Temp\f36423b40d7a0bbc75a9d05f0e324e72_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:3260

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description hdehcfwe "wifi internet conection"
2⤵
- Launches sc.exe
PID:4748

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start hdehcfwe
2⤵
- Launches sc.exe
PID:4244

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:4876

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2544 -s 1156
2⤵
- Program crash
PID:5108

C:\Windows\SysWOW64\hdehcfwe\omvwfbqm.exe
C:\Windows\SysWOW64\hdehcfwe\omvwfbqm.exe /d"C:\Users\Admin\AppData\Local\Temp\f36423b40d7a0bbc75a9d05f0e324e72_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2972

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:672

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2972 -s 536
2⤵
- Program crash
PID:2372

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 2544 -ip 2544
1⤵
PID:2128

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 2972 -ip 2972
1⤵
PID:2280

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

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

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\omvwfbqm.exe
Filesize
15.0MB

MD5
8cd216cf4828a28c3929d952feb71c53

SHA1
23e53f0c5a09e4a24270c857bcd6300b9fc46b58

SHA256
3d3c98d46a9290db9f13056aa3d2b17ce1ab655a3ed911606078ad4fd40af6f7

SHA512
6541cfed769090edc90d00f5e8db95dffcf2e8cc493fecf1db84b3b5ad365dc818ca4e611d35d75bd61b0e25306055638a2535080f939495912cd64306bc4745

Download Submit
memory/672-8-0x0000000000610000-0x0000000000625000-memory.dmp

Filesize
84KB

Download
memory/672-12-0x0000000000610000-0x0000000000625000-memory.dmp

Filesize
84KB

Download
memory/672-15-0x0000000000610000-0x0000000000625000-memory.dmp

Filesize
84KB

Download
memory/672-16-0x0000000000610000-0x0000000000625000-memory.dmp

Filesize
84KB

Download
memory/672-17-0x0000000000610000-0x0000000000625000-memory.dmp

Filesize
84KB

Download
memory/2544-1-0x0000000005360000-0x0000000005460000-memory.dmp

Filesize
1024KB

Download
memory/2544-2-0x00000000051A0000-0x00000000051B3000-memory.dmp

Filesize
76KB

Download
memory/2544-13-0x0000000000400000-0x0000000005169000-memory.dmp

Filesize
77.4MB

Download
memory/2972-9-0x00000000052C0000-0x00000000052D3000-memory.dmp

Filesize
76KB

Download
memory/2972-7-0x0000000005300000-0x0000000005400000-memory.dmp

Filesize
1024KB

Download
memory/2972-14-0x0000000000400000-0x0000000005169000-memory.dmp

Filesize
77.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads