tofsee | 086d569820100e59cb3709bb6c5ea5b1026861c52ff05c7d9afad992885f790f

General

Target

086d569820100e59cb3709bb6c5ea5b1026861c52ff05c7d9afad992885f790fN.exe
Size

144KB
MD5

79e36707abf82183a03e9d8dda3b3430
SHA1

d986b8ba3ed36333f127b34842fc991713c4f5ac
SHA256

086d569820100e59cb3709bb6c5ea5b1026861c52ff05c7d9afad992885f790f
SHA512

26f0b48f09193014bd9fc5f1ede8df23979e4791ae47e6d4395656fa62d22a32435f43aba15e3f32facb4fdc24f2ed97305bebf1eb53bc5033bae82710e88b4d
SSDEEP

3072:uaVP6HaGT5SR8fGzIpYDx1cTqO9lkS2jbxWGqSV3:uaGoEpWxSbGqSV3

Score

10^/10

tofsee discovery persistence trojan

Malware Config

Extracted

Family

tofsee

C2

91.218.39.211

188.130.237.44

91.204.162.103

188.165.132.183

rgtryhbgddtyh.biz

wertdghbyrukl.ch

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Tofsee family
tofsee

Deletes itself 1 IoCs

pid	Process
2908	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2576	stljjdvi.exe

Loads dropped DLL 2 IoCs

pid	Process
2084	086d569820100e59cb3709bb6c5ea5b1026861c52ff05c7d9afad992885f790fN.exe
2084	086d569820100e59cb3709bb6c5ea5b1026861c52ff05c7d9afad992885f790fN.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\MSConfig = "\"C:\\Users\\Admin\\stljjdvi.exe\""	086d569820100e59cb3709bb6c5ea5b1026861c52ff05c7d9afad992885f790fN.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2576 set thread context of 1828	2576	stljjdvi.exe	31

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	stljjdvi.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	086d569820100e59cb3709bb6c5ea5b1026861c52ff05c7d9afad992885f790fN.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2496	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2496	PING.EXE

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2084	086d569820100e59cb3709bb6c5ea5b1026861c52ff05c7d9afad992885f790fN.exe
2576	stljjdvi.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2084 wrote to memory of 2576	2084	086d569820100e59cb3709bb6c5ea5b1026861c52ff05c7d9afad992885f790fN.exe	30
PID 2084 wrote to memory of 2576	2084	086d569820100e59cb3709bb6c5ea5b1026861c52ff05c7d9afad992885f790fN.exe	30
PID 2084 wrote to memory of 2576	2084	086d569820100e59cb3709bb6c5ea5b1026861c52ff05c7d9afad992885f790fN.exe	30
PID 2084 wrote to memory of 2576	2084	086d569820100e59cb3709bb6c5ea5b1026861c52ff05c7d9afad992885f790fN.exe	30
PID 2576 wrote to memory of 1828	2576	stljjdvi.exe	31
PID 2576 wrote to memory of 1828	2576	stljjdvi.exe	31
PID 2576 wrote to memory of 1828	2576	stljjdvi.exe	31
PID 2576 wrote to memory of 1828	2576	stljjdvi.exe	31
PID 2576 wrote to memory of 1828	2576	stljjdvi.exe	31
PID 2576 wrote to memory of 1828	2576	stljjdvi.exe	31
PID 2084 wrote to memory of 2908	2084	086d569820100e59cb3709bb6c5ea5b1026861c52ff05c7d9afad992885f790fN.exe	32
PID 2084 wrote to memory of 2908	2084	086d569820100e59cb3709bb6c5ea5b1026861c52ff05c7d9afad992885f790fN.exe	32
PID 2084 wrote to memory of 2908	2084	086d569820100e59cb3709bb6c5ea5b1026861c52ff05c7d9afad992885f790fN.exe	32
PID 2084 wrote to memory of 2908	2084	086d569820100e59cb3709bb6c5ea5b1026861c52ff05c7d9afad992885f790fN.exe	32
PID 2908 wrote to memory of 2496	2908	cmd.exe	34
PID 2908 wrote to memory of 2496	2908	cmd.exe	34
PID 2908 wrote to memory of 2496	2908	cmd.exe	34
PID 2908 wrote to memory of 2496	2908	cmd.exe	34

C:\Users\Admin\AppData\Local\Temp\086d569820100e59cb3709bb6c5ea5b1026861c52ff05c7d9afad992885f790fN.exe
"C:\Users\Admin\AppData\Local\Temp\086d569820100e59cb3709bb6c5ea5b1026861c52ff05c7d9afad992885f790fN.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2084
- C:\Users\Admin\stljjdvi.exe
  "C:\Users\Admin\stljjdvi.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of UnmapMainImage
  - Suspicious use of WriteProcessMemory
  PID:2576
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1828
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\7174.bat" "
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2908
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2496

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

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Remote System Discovery

1

T1018

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\7174.bat

Filesize
304B

MD5
260fe91b48cd9bdd9eb9a3677f18f128

SHA1
2f7334722de5e25d81de5be4fadc98ef92dadca2

SHA256
f30ed516ce5be9cdfe1e84c78d3e5c600ec50d0458ba0f0bf72f7f21de3da549

SHA512
55687dc48f7a889652472e797571ef31eb51269fe3441c3046a005b326d2dadba274c677de2b0496aabd76df5a0d6dd395efef4990ec9650a548612d61668bd9

Download Submit
\Users\Admin\stljjdvi.exe

Filesize
36.4MB

MD5
ee5a1d25f30e92c92fea5ae5724171f0

SHA1
d3f3fb59c6041e8687b96cf9b1aae05db1f3f05e

SHA256
cc547feaae713f13ff48c3117d547ef927d6036d52d26cd06600182204e5e146

SHA512
038b26e4e2e25ee732fb07a7fc9f19eb9a76032e900c18d0ca9d34e5434ce13b72f6e5d4593ecbbe5450a85764594810f81f1de2e971bd8deff1a41623567ea3

Download Submit
memory/1828-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1828-14-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1828-25-0x00000000000A0000-0x00000000000A1000-memory.dmp

Filesize
4KB

Download
memory/1828-39-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1828-20-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1828-38-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1828-11-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1828-21-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2084-34-0x0000000000240000-0x0000000000252000-memory.dmp

Filesize
72KB

Download
memory/2084-0-0x0000000000240000-0x0000000000252000-memory.dmp

Filesize
72KB

Download
memory/2084-35-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2084-1-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2576-16-0x0000000000240000-0x0000000000252000-memory.dmp

Filesize
72KB

Download
memory/2576-17-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads