tofsee | 4fe6a0bb0f44d47d3c4b6c0414a113587cb8ab0a9496a4075092b6e953149cfa

General

Target

eaee135dc12100d26a1cf65da750abec_JaffaCakes118.exe
Size

11.3MB
MD5

eaee135dc12100d26a1cf65da750abec
SHA1

1ce584e03acda77cf06973c33d9df4822676830b
SHA256

4fe6a0bb0f44d47d3c4b6c0414a113587cb8ab0a9496a4075092b6e953149cfa
SHA512

0f105513744b777633bafa163be8954352a7913ba18e22e7808318633dc18e84a4a6e40107e68e7b0d14f28d28d5117bb5c11a9a5814f657616182747f5b17c4
SSDEEP

49152:0jrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrD:y

Score

10^/10

tofsee evasion 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) 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
972	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\hnbimepw\ImagePath = "C:\\Windows\\SysWOW64\\hnbimepw\\ivjmoomz.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	eaee135dc12100d26a1cf65da750abec_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2504	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
100	ivjmoomz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 100 set thread context of 2504	100	ivjmoomz.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
4100	sc.exe
3528	sc.exe
2216	sc.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4676 wrote to memory of 4336	4676	eaee135dc12100d26a1cf65da750abec_JaffaCakes118.exe	88
PID 4676 wrote to memory of 4336	4676	eaee135dc12100d26a1cf65da750abec_JaffaCakes118.exe	88
PID 4676 wrote to memory of 4336	4676	eaee135dc12100d26a1cf65da750abec_JaffaCakes118.exe	88
PID 4676 wrote to memory of 4240	4676	eaee135dc12100d26a1cf65da750abec_JaffaCakes118.exe	91
PID 4676 wrote to memory of 4240	4676	eaee135dc12100d26a1cf65da750abec_JaffaCakes118.exe	91
PID 4676 wrote to memory of 4240	4676	eaee135dc12100d26a1cf65da750abec_JaffaCakes118.exe	91
PID 4676 wrote to memory of 4100	4676	eaee135dc12100d26a1cf65da750abec_JaffaCakes118.exe	94
PID 4676 wrote to memory of 4100	4676	eaee135dc12100d26a1cf65da750abec_JaffaCakes118.exe	94
PID 4676 wrote to memory of 4100	4676	eaee135dc12100d26a1cf65da750abec_JaffaCakes118.exe	94
PID 4676 wrote to memory of 3528	4676	eaee135dc12100d26a1cf65da750abec_JaffaCakes118.exe	96
PID 4676 wrote to memory of 3528	4676	eaee135dc12100d26a1cf65da750abec_JaffaCakes118.exe	96
PID 4676 wrote to memory of 3528	4676	eaee135dc12100d26a1cf65da750abec_JaffaCakes118.exe	96
PID 4676 wrote to memory of 2216	4676	eaee135dc12100d26a1cf65da750abec_JaffaCakes118.exe	98
PID 4676 wrote to memory of 2216	4676	eaee135dc12100d26a1cf65da750abec_JaffaCakes118.exe	98
PID 4676 wrote to memory of 2216	4676	eaee135dc12100d26a1cf65da750abec_JaffaCakes118.exe	98
PID 100 wrote to memory of 2504	100	ivjmoomz.exe	101
PID 100 wrote to memory of 2504	100	ivjmoomz.exe	101
PID 100 wrote to memory of 2504	100	ivjmoomz.exe	101
PID 100 wrote to memory of 2504	100	ivjmoomz.exe	101
PID 100 wrote to memory of 2504	100	ivjmoomz.exe	101
PID 4676 wrote to memory of 972	4676	eaee135dc12100d26a1cf65da750abec_JaffaCakes118.exe	104
PID 4676 wrote to memory of 972	4676	eaee135dc12100d26a1cf65da750abec_JaffaCakes118.exe	104
PID 4676 wrote to memory of 972	4676	eaee135dc12100d26a1cf65da750abec_JaffaCakes118.exe	104

C:\Users\Admin\AppData\Local\Temp\eaee135dc12100d26a1cf65da750abec_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\eaee135dc12100d26a1cf65da750abec_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4676
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hnbimepw\
  2⤵
  PID:4336
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ivjmoomz.exe" C:\Windows\SysWOW64\hnbimepw\
  2⤵
  PID:4240
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create hnbimepw binPath= "C:\Windows\SysWOW64\hnbimepw\ivjmoomz.exe /d\"C:\Users\Admin\AppData\Local\Temp\eaee135dc12100d26a1cf65da750abec_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:4100
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description hnbimepw "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:3528
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start hnbimepw
  2⤵
  - Launches sc.exe
  PID:2216
- 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:972

C:\Windows\SysWOW64\hnbimepw\ivjmoomz.exe
C:\Windows\SysWOW64\hnbimepw\ivjmoomz.exe /d"C:\Users\Admin\AppData\Local\Temp\eaee135dc12100d26a1cf65da750abec_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:100
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:2504

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\ivjmoomz.exe

Filesize
11.1MB

MD5
890721d102eb4d05d97eee3968480d26

SHA1
c9ceb07d01a78bfbfc09a97540c7685c8d2a5cb5

SHA256
cb895591cdd30761f653984b765086f02a72ddaec028271b90dde00d06f3433a

SHA512
158144b9aa3b33544d1208defd26994004606eb1b1a0625e19954bff664e8befd8e252be9726663fb414fbcad9a606ed2ed8633ac62612216993f457307e4731

Download Submit
memory/100-11-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/100-9-0x0000000000CE0000-0x0000000000CE1000-memory.dmp

Filesize
4KB

Download
memory/100-7-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/2504-14-0x0000000000DD0000-0x0000000000DE5000-memory.dmp

Filesize
84KB

Download
memory/2504-10-0x0000000000DD0000-0x0000000000DE5000-memory.dmp

Filesize
84KB

Download
memory/2504-16-0x0000000000DD0000-0x0000000000DE5000-memory.dmp

Filesize
84KB

Download
memory/2504-17-0x0000000000DD0000-0x0000000000DE5000-memory.dmp

Filesize
84KB

Download
memory/2504-18-0x0000000000DD0000-0x0000000000DE5000-memory.dmp

Filesize
84KB

Download
memory/4676-3-0x00000000005E0000-0x00000000005E1000-memory.dmp

Filesize
4KB

Download
memory/4676-1-0x00000000005D0000-0x00000000005D1000-memory.dmp

Filesize
4KB

Download
memory/4676-2-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/4676-0-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/4676-15-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads