tofsee | ba9da660fce6bc22eae29f80bacde100bbcaa748c675e68bcfaa04ccaaf2f20b

Analysis

max time kernel
144s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
16/06/2024, 10:21

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General

Target
b2ff3c3152615f2ebb1b04f4f1912e3d_JaffaCakes118.exe
Size 120KB
Sample240616-mdtvbatclq
SHA256 ba9da660fce6bc22eae29f80bacde100bbcaa748c675e68bcfaa04ccaaf2f20b
MD5 b2ff3c3152615f2ebb1b04f4f1912e3d
SHA1 811d816320a6bfcc6198db38bb0d6176b6d73460
SHA512 f500c49b05ecea5be31ef9e31e0295812c68ab066d9410b24ab9d6fdce94ab00b2248b50bf7fde1fff529b3ed01cd25ea906fb1ec508ffbc4e128736280b3a3d
SSDEEP 1536:GCt2rSASlezj33Yh/2haLYmOlxmvOmxdXWXixGE9bz+rXzJ3Jft1VGV:ySAgowga2DmvOOdXWGDl+TzJ3htXG
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tofsee evasion execution persistence trojan

Malware Config

Extracted

Family

tofsee

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

pid	Process
3052	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\dwodibrc\ImagePath = "C:\\Windows\\SysWOW64\\dwodibrc\\jeliheab.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-1-5-21-200405930-3877336739-3533750831-1000\Control Panel\International\Geo\Nation	b2ff3c3152615f2ebb1b04f4f1912e3d_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
4796	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1288	jeliheab.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1288 set thread context of 4796	1288	jeliheab.exe	95

Launches sc.exe 3 IoCs

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

pid	Process
3660	sc.exe
3588	sc.exe
2628	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 3948 wrote to memory of 3276	3948	b2ff3c3152615f2ebb1b04f4f1912e3d_JaffaCakes118.exe	81
PID 3948 wrote to memory of 3276	3948	b2ff3c3152615f2ebb1b04f4f1912e3d_JaffaCakes118.exe	81
PID 3948 wrote to memory of 3276	3948	b2ff3c3152615f2ebb1b04f4f1912e3d_JaffaCakes118.exe	81
PID 3948 wrote to memory of 1912	3948	b2ff3c3152615f2ebb1b04f4f1912e3d_JaffaCakes118.exe	85
PID 3948 wrote to memory of 1912	3948	b2ff3c3152615f2ebb1b04f4f1912e3d_JaffaCakes118.exe	85
PID 3948 wrote to memory of 1912	3948	b2ff3c3152615f2ebb1b04f4f1912e3d_JaffaCakes118.exe	85
PID 3948 wrote to memory of 3588	3948	b2ff3c3152615f2ebb1b04f4f1912e3d_JaffaCakes118.exe	88
PID 3948 wrote to memory of 3588	3948	b2ff3c3152615f2ebb1b04f4f1912e3d_JaffaCakes118.exe	88
PID 3948 wrote to memory of 3588	3948	b2ff3c3152615f2ebb1b04f4f1912e3d_JaffaCakes118.exe	88
PID 3948 wrote to memory of 2628	3948	b2ff3c3152615f2ebb1b04f4f1912e3d_JaffaCakes118.exe	90
PID 3948 wrote to memory of 2628	3948	b2ff3c3152615f2ebb1b04f4f1912e3d_JaffaCakes118.exe	90
PID 3948 wrote to memory of 2628	3948	b2ff3c3152615f2ebb1b04f4f1912e3d_JaffaCakes118.exe	90
PID 3948 wrote to memory of 3660	3948	b2ff3c3152615f2ebb1b04f4f1912e3d_JaffaCakes118.exe	92
PID 3948 wrote to memory of 3660	3948	b2ff3c3152615f2ebb1b04f4f1912e3d_JaffaCakes118.exe	92
PID 3948 wrote to memory of 3660	3948	b2ff3c3152615f2ebb1b04f4f1912e3d_JaffaCakes118.exe	92
PID 1288 wrote to memory of 4796	1288	jeliheab.exe	95
PID 1288 wrote to memory of 4796	1288	jeliheab.exe	95
PID 1288 wrote to memory of 4796	1288	jeliheab.exe	95
PID 1288 wrote to memory of 4796	1288	jeliheab.exe	95
PID 1288 wrote to memory of 4796	1288	jeliheab.exe	95
PID 3948 wrote to memory of 3052	3948	b2ff3c3152615f2ebb1b04f4f1912e3d_JaffaCakes118.exe	96
PID 3948 wrote to memory of 3052	3948	b2ff3c3152615f2ebb1b04f4f1912e3d_JaffaCakes118.exe	96
PID 3948 wrote to memory of 3052	3948	b2ff3c3152615f2ebb1b04f4f1912e3d_JaffaCakes118.exe	96

C:\Users\Admin\AppData\Local\Temp\b2ff3c3152615f2ebb1b04f4f1912e3d_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b2ff3c3152615f2ebb1b04f4f1912e3d_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3948
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dwodibrc\
  2⤵
  PID:3276
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jeliheab.exe" C:\Windows\SysWOW64\dwodibrc\
  2⤵
  PID:1912
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create dwodibrc binPath= "C:\Windows\SysWOW64\dwodibrc\jeliheab.exe /d\"C:\Users\Admin\AppData\Local\Temp\b2ff3c3152615f2ebb1b04f4f1912e3d_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:3588
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description dwodibrc "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:2628
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start dwodibrc
  2⤵
  - Launches sc.exe
  PID:3660
- 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:3052

C:\Windows\SysWOW64\dwodibrc\jeliheab.exe
C:\Windows\SysWOW64\dwodibrc\jeliheab.exe /d"C:\Users\Admin\AppData\Local\Temp\b2ff3c3152615f2ebb1b04f4f1912e3d_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1288
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:4796

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

jeliheab.exe

Path C:\Users\Admin\AppData\Local\Temp\jeliheab.exe
Size 11.8MB
SHA256 5c768f2c6c075f5a1d3eb3c94d1d7602e76db40f2f3d924d67d5bd4481dfb8a8
MD5 a54e63ee5288766a436da5c6216e04da
SHA1 cd4cf5a7c4c88833e40dc42163e8c8980377d78c
SHA512 b998b71f1d47458610ddf0ad716de622fac2dd2df2685ec32745a68b5134b163de6f79b024792e2c899957df9f9804f3403b2f98109ff538c2db12e3e7976027
SSDEEP 98304:9kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkY:
MD5 SHA1 SHA512 SSDEEP

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memory/1288-10-0x000000005F000000-0x000000005F011000-memory.dmp

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memory/1288-6-0x0000000001040000-0x0000000001041000-memory.dmp

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memory/1288-9-0x0000000000400000-0x0000000000421000-memory.dmp

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memory/1288-7-0x0000000000400000-0x0000000000421000-memory.dmp

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memory/3948-15-0x000000005F000000-0x000000005F011000-memory.dmp

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memory/3948-0-0x0000000000400000-0x0000000000421000-memory.dmp

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memory/3948-1-0x00000000023D0000-0x00000000023D1000-memory.dmp

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memory/3948-14-0x0000000000400000-0x0000000000421000-memory.dmp

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memory/3948-2-0x0000000000590000-0x0000000000591000-memory.dmp

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memory/4796-8-0x00000000004F0000-0x0000000000505000-memory.dmp

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memory/4796-13-0x00000000004F0000-0x0000000000505000-memory.dmp

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memory/4796-16-0x00000000004F0000-0x0000000000505000-memory.dmp

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memory/4796-17-0x00000000004F0000-0x0000000000505000-memory.dmp

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memory/4796-18-0x00000000004F0000-0x0000000000505000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads