tofsee | 9c04dffcd40004b5474f4827f6eac7537f8a049eee351a6866206943c55e7513

General

Target

05a2ffa77432d48e8dffb43a9e201c28.exe
Size

10.0MB
MD5

05a2ffa77432d48e8dffb43a9e201c28
SHA1

63cf6faadb2815d4eaaa6fa82f8e561d92dfa487
SHA256

9c04dffcd40004b5474f4827f6eac7537f8a049eee351a6866206943c55e7513
SHA512

c15e73e89f936f0d28b0ed32a0a09cab11f6957d566da281cd903f80db94200e713ea09373bb1204d20396e1679a1ea6adf7a238d9ad925806ee01f0a70706d4
SSDEEP

49152:UQsPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP:UQ

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 1 TTPs 1 IoCs

evasion

Windows Service

T1543.003

pid	Process
4444	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\akidlrup\ImagePath = "C:\\Windows\\SysWOW64\\akidlrup\\ehppnlpy.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-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation	05a2ffa77432d48e8dffb43a9e201c28.exe

Deletes itself 1 IoCs

pid	Process
1248	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4020	ehppnlpy.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4020 set thread context of 1248	4020	ehppnlpy.exe	107

Launches sc.exe 3 IoCs

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

pid	Process
912	sc.exe
4456	sc.exe
4608	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 4980 wrote to memory of 2556	4980	05a2ffa77432d48e8dffb43a9e201c28.exe	93
PID 4980 wrote to memory of 2556	4980	05a2ffa77432d48e8dffb43a9e201c28.exe	93
PID 4980 wrote to memory of 2556	4980	05a2ffa77432d48e8dffb43a9e201c28.exe	93
PID 4980 wrote to memory of 380	4980	05a2ffa77432d48e8dffb43a9e201c28.exe	96
PID 4980 wrote to memory of 380	4980	05a2ffa77432d48e8dffb43a9e201c28.exe	96
PID 4980 wrote to memory of 380	4980	05a2ffa77432d48e8dffb43a9e201c28.exe	96
PID 4980 wrote to memory of 912	4980	05a2ffa77432d48e8dffb43a9e201c28.exe	99
PID 4980 wrote to memory of 912	4980	05a2ffa77432d48e8dffb43a9e201c28.exe	99
PID 4980 wrote to memory of 912	4980	05a2ffa77432d48e8dffb43a9e201c28.exe	99
PID 4980 wrote to memory of 4456	4980	05a2ffa77432d48e8dffb43a9e201c28.exe	100
PID 4980 wrote to memory of 4456	4980	05a2ffa77432d48e8dffb43a9e201c28.exe	100
PID 4980 wrote to memory of 4456	4980	05a2ffa77432d48e8dffb43a9e201c28.exe	100
PID 4980 wrote to memory of 4608	4980	05a2ffa77432d48e8dffb43a9e201c28.exe	103
PID 4980 wrote to memory of 4608	4980	05a2ffa77432d48e8dffb43a9e201c28.exe	103
PID 4980 wrote to memory of 4608	4980	05a2ffa77432d48e8dffb43a9e201c28.exe	103
PID 4980 wrote to memory of 4444	4980	05a2ffa77432d48e8dffb43a9e201c28.exe	105
PID 4980 wrote to memory of 4444	4980	05a2ffa77432d48e8dffb43a9e201c28.exe	105
PID 4980 wrote to memory of 4444	4980	05a2ffa77432d48e8dffb43a9e201c28.exe	105
PID 4020 wrote to memory of 1248	4020	ehppnlpy.exe	107
PID 4020 wrote to memory of 1248	4020	ehppnlpy.exe	107
PID 4020 wrote to memory of 1248	4020	ehppnlpy.exe	107
PID 4020 wrote to memory of 1248	4020	ehppnlpy.exe	107
PID 4020 wrote to memory of 1248	4020	ehppnlpy.exe	107

C:\Users\Admin\AppData\Local\Temp\05a2ffa77432d48e8dffb43a9e201c28.exe
"C:\Users\Admin\AppData\Local\Temp\05a2ffa77432d48e8dffb43a9e201c28.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4980
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\akidlrup\
  2⤵
  PID:2556
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ehppnlpy.exe" C:\Windows\SysWOW64\akidlrup\
  2⤵
  PID:380
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create akidlrup binPath= "C:\Windows\SysWOW64\akidlrup\ehppnlpy.exe /d\"C:\Users\Admin\AppData\Local\Temp\05a2ffa77432d48e8dffb43a9e201c28.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:912
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description akidlrup "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:4456
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start akidlrup
  2⤵
  - Launches sc.exe
  PID:4608
- 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:4444

C:\Windows\SysWOW64\akidlrup\ehppnlpy.exe
C:\Windows\SysWOW64\akidlrup\ehppnlpy.exe /d"C:\Users\Admin\AppData\Local\Temp\05a2ffa77432d48e8dffb43a9e201c28.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4020
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:1248

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

Modify Registry

1

T1112

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\ehppnlpy.exe

Filesize
806KB

MD5
51f5f71e34f7beb35249357f45757739

SHA1
3558ec63395bd5c5a99aec9e97f810f8996dd7ff

SHA256
0075a33191f9e64b371e380b6268727919874194dd8fb53cf692d3f5cf46c3d0

SHA512
ce96f37551ad276e00820bdad72d1007b913baea56bbbdee25f1f431f2c1c9e1265d7dd7657e4355107eca145ea42420e7dfaa218ca659f8070fc0c1cd76fe13

Download Submit
C:\Windows\SysWOW64\akidlrup\ehppnlpy.exe

Filesize
186KB

MD5
b0944cb0e9fa53e55b5a8544a47de770

SHA1
353befa735f196ac3f870a7c43f363cdf86af55c

SHA256
18bd23a2021b6675ab4f97173b9884f8b49f12d754ddbfc556a6feaf9928f94b

SHA512
b6f2db38e3b45b9a2cfb5cd5292fcc50e41146436e5dfa994568cd17f5f84b8d440c69f286774c6bfee95ad967ac3096bdf166b7cdac197df9ccefc444df08ce

Download Submit
memory/1248-16-0x00000000007A0000-0x00000000007B5000-memory.dmp

Filesize
84KB

Download
memory/1248-11-0x00000000007A0000-0x00000000007B5000-memory.dmp

Filesize
84KB

Download
memory/1248-17-0x00000000007A0000-0x00000000007B5000-memory.dmp

Filesize
84KB

Download
memory/1248-18-0x00000000007A0000-0x00000000007B5000-memory.dmp

Filesize
84KB

Download
memory/4020-7-0x0000000000400000-0x0000000000C56000-memory.dmp

Filesize
8.3MB

Download
memory/4020-10-0x0000000000EB0000-0x0000000000FB0000-memory.dmp

Filesize
1024KB

Download
memory/4020-15-0x0000000000400000-0x0000000000C56000-memory.dmp

Filesize
8.3MB

Download
memory/4020-13-0x0000000000400000-0x0000000000C56000-memory.dmp

Filesize
8.3MB

Download
memory/4980-4-0x0000000000400000-0x0000000000C56000-memory.dmp

Filesize
8.3MB

Download
memory/4980-2-0x0000000000F90000-0x0000000001090000-memory.dmp

Filesize
1024KB

Download
memory/4980-8-0x0000000000400000-0x0000000000C56000-memory.dmp

Filesize
8.3MB

Download
memory/4980-0-0x0000000000400000-0x0000000000C56000-memory.dmp

Filesize
8.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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