tofsee | ae103e5b5c8ef0a895facd30ab6658ca00abff8604f751cc1429dd0ee3c19a9e

General

Target

ae103e5b5c8ef0a895facd30ab6658ca00abff8604f751cc1429dd0ee3c19a9e.exe
Size

13.2MB
MD5

3328e6fe99f8cfe5b8acbaab0cb50fd0
SHA1

fcd53cf0cf6b7dc3fb623908525082500cdddc17
SHA256

ae103e5b5c8ef0a895facd30ab6658ca00abff8604f751cc1429dd0ee3c19a9e
SHA512

2cb03e94d20b5a3d0c6c81d51ec8b00988b65b2c372b21ae561ab0df3331e2bbc9973bece7c527aad4b61c08b1f33b0954e0cce92fd9bbff74c6c98f574d15c6
SSDEEP

3072:38NYa2qJjULtTNupQyEC6pxhhfm5OcVi:3sRItTNKr2f45

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
5032	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\jinhyifx\ImagePath = "C:\\Windows\\SysWOW64\\jinhyifx\\kiplktri.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-1-5-21-2231940048-779848787-2990559741-1000\Control Panel\International\Geo\Nation	ae103e5b5c8ef0a895facd30ab6658ca00abff8604f751cc1429dd0ee3c19a9e.exe

Deletes itself 1 IoCs

pid	Process
1340	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3384	kiplktri.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3384 set thread context of 1340	3384	kiplktri.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
1748	sc.exe
1764	sc.exe
1324	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 4424 wrote to memory of 2024	4424	ae103e5b5c8ef0a895facd30ab6658ca00abff8604f751cc1429dd0ee3c19a9e.exe	87
PID 4424 wrote to memory of 2024	4424	ae103e5b5c8ef0a895facd30ab6658ca00abff8604f751cc1429dd0ee3c19a9e.exe	87
PID 4424 wrote to memory of 2024	4424	ae103e5b5c8ef0a895facd30ab6658ca00abff8604f751cc1429dd0ee3c19a9e.exe	87
PID 4424 wrote to memory of 3144	4424	ae103e5b5c8ef0a895facd30ab6658ca00abff8604f751cc1429dd0ee3c19a9e.exe	89
PID 4424 wrote to memory of 3144	4424	ae103e5b5c8ef0a895facd30ab6658ca00abff8604f751cc1429dd0ee3c19a9e.exe	89
PID 4424 wrote to memory of 3144	4424	ae103e5b5c8ef0a895facd30ab6658ca00abff8604f751cc1429dd0ee3c19a9e.exe	89
PID 4424 wrote to memory of 1748	4424	ae103e5b5c8ef0a895facd30ab6658ca00abff8604f751cc1429dd0ee3c19a9e.exe	92
PID 4424 wrote to memory of 1748	4424	ae103e5b5c8ef0a895facd30ab6658ca00abff8604f751cc1429dd0ee3c19a9e.exe	92
PID 4424 wrote to memory of 1748	4424	ae103e5b5c8ef0a895facd30ab6658ca00abff8604f751cc1429dd0ee3c19a9e.exe	92
PID 4424 wrote to memory of 1764	4424	ae103e5b5c8ef0a895facd30ab6658ca00abff8604f751cc1429dd0ee3c19a9e.exe	96
PID 4424 wrote to memory of 1764	4424	ae103e5b5c8ef0a895facd30ab6658ca00abff8604f751cc1429dd0ee3c19a9e.exe	96
PID 4424 wrote to memory of 1764	4424	ae103e5b5c8ef0a895facd30ab6658ca00abff8604f751cc1429dd0ee3c19a9e.exe	96
PID 4424 wrote to memory of 1324	4424	ae103e5b5c8ef0a895facd30ab6658ca00abff8604f751cc1429dd0ee3c19a9e.exe	98
PID 4424 wrote to memory of 1324	4424	ae103e5b5c8ef0a895facd30ab6658ca00abff8604f751cc1429dd0ee3c19a9e.exe	98
PID 4424 wrote to memory of 1324	4424	ae103e5b5c8ef0a895facd30ab6658ca00abff8604f751cc1429dd0ee3c19a9e.exe	98
PID 4424 wrote to memory of 5032	4424	ae103e5b5c8ef0a895facd30ab6658ca00abff8604f751cc1429dd0ee3c19a9e.exe	100
PID 4424 wrote to memory of 5032	4424	ae103e5b5c8ef0a895facd30ab6658ca00abff8604f751cc1429dd0ee3c19a9e.exe	100
PID 4424 wrote to memory of 5032	4424	ae103e5b5c8ef0a895facd30ab6658ca00abff8604f751cc1429dd0ee3c19a9e.exe	100
PID 3384 wrote to memory of 1340	3384	kiplktri.exe	103
PID 3384 wrote to memory of 1340	3384	kiplktri.exe	103
PID 3384 wrote to memory of 1340	3384	kiplktri.exe	103
PID 3384 wrote to memory of 1340	3384	kiplktri.exe	103
PID 3384 wrote to memory of 1340	3384	kiplktri.exe	103

C:\Users\Admin\AppData\Local\Temp\ae103e5b5c8ef0a895facd30ab6658ca00abff8604f751cc1429dd0ee3c19a9e.exe
"C:\Users\Admin\AppData\Local\Temp\ae103e5b5c8ef0a895facd30ab6658ca00abff8604f751cc1429dd0ee3c19a9e.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4424
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jinhyifx\
  2⤵
  PID:2024
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kiplktri.exe" C:\Windows\SysWOW64\jinhyifx\
  2⤵
  PID:3144
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create jinhyifx binPath= "C:\Windows\SysWOW64\jinhyifx\kiplktri.exe /d\"C:\Users\Admin\AppData\Local\Temp\ae103e5b5c8ef0a895facd30ab6658ca00abff8604f751cc1429dd0ee3c19a9e.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:1748
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description jinhyifx "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:1764
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start jinhyifx
  2⤵
  - Launches sc.exe
  PID:1324
- 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:5032

C:\Windows\SysWOW64\jinhyifx\kiplktri.exe
C:\Windows\SysWOW64\jinhyifx\kiplktri.exe /d"C:\Users\Admin\AppData\Local\Temp\ae103e5b5c8ef0a895facd30ab6658ca00abff8604f751cc1429dd0ee3c19a9e.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3384
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:1340

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\kiplktri.exe

Filesize
12.9MB

MD5
aece90724fab86c45b92621dce54418b

SHA1
74b5a86f0456bd2f5e3776ef574e7853d1d2d89e

SHA256
bedd4e11ed01636520db6d524ce574ca5ce38763b90c14220543b61198c73194

SHA512
9e69b96eda1c151c075255133a70a04f37e112b06d8e172caf5fba56617a14f14e0bfbfa98d287de8af46594416d000e74e45926c67a549f6aec17deb4913c2d

Download Submit
C:\Windows\SysWOW64\jinhyifx\kiplktri.exe

Filesize
12.9MB

MD5
aece90724fab86c45b92621dce54418b

SHA1
74b5a86f0456bd2f5e3776ef574e7853d1d2d89e

SHA256
bedd4e11ed01636520db6d524ce574ca5ce38763b90c14220543b61198c73194

SHA512
9e69b96eda1c151c075255133a70a04f37e112b06d8e172caf5fba56617a14f14e0bfbfa98d287de8af46594416d000e74e45926c67a549f6aec17deb4913c2d

Download Submit
memory/1340-9-0x0000000001200000-0x0000000001215000-memory.dmp

Filesize
84KB

Download
memory/1340-14-0x0000000001200000-0x0000000001215000-memory.dmp

Filesize
84KB

Download
memory/1340-15-0x0000000001200000-0x0000000001215000-memory.dmp

Filesize
84KB

Download
memory/1340-16-0x0000000001200000-0x0000000001215000-memory.dmp

Filesize
84KB

Download
memory/3384-12-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3384-7-0x0000000000690000-0x0000000000691000-memory.dmp

Filesize
4KB

Download
memory/4424-1-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/4424-0-0x00000000009D0000-0x00000000009D1000-memory.dmp

Filesize
4KB

Download
memory/4424-2-0x00000000009E0000-0x00000000009E1000-memory.dmp

Filesize
4KB

Download
memory/4424-6-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads