tofsee | 85eca08e0d409e4c94322f454b9978281d4418ec61521a2feab505c76c7a6b02

Analysis

max time kernel
148s
max time network
143s
platform
windows10-1703_x64
resource
win10-20220812-en
resource tags

arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system
submitted
02-12-2022 11:46

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

85eca08e0d409e4c94322f454b9978281d4418ec61521a2feab505c76c7a6b02.exe
Size

349KB
MD5

9c7cf69b45ace1ffd689b1725fd5bbfc
SHA1

b9b9677ff38eb6ee8b1b3ef85181675e84830ecf
SHA256

85eca08e0d409e4c94322f454b9978281d4418ec61521a2feab505c76c7a6b02
SHA512

9ac0e8740e8dcf989c652f6274b8023ee103a08c6b7775d658097a07a7162c27afc19d413d6b015552743a7eeafa601e38de27b1306f9d42b129cebe47683530
SSDEEP

3072:YT832BLU26yrK5sAFv0hHHyssE6QrjHwUUWQPiTdvaG9WLzjHhIh3eGjMgG1ao5e:zGBLH6yrDgchHSkfbATL/uRjMgU

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

svartalfheim.top

jotunheim.name

Signatures

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

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\mbvwqrmk = "0"	svchost.exe

Creates new service(s) 1 TTPs
persistence

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

cbabcmor.exe

pid process

4232 cbabcmor.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

4252 netsh.exe

pid	process
4232	cbabcmor.exe

pid	process
4252	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\mbvwqrmk\ImagePath = "C:\\Windows\\SysWOW64\\mbvwqrmk\\cbabcmor.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

3940 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

cbabcmor.exe

description pid process target process

PID 4232 set thread context of 3940 4232 cbabcmor.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

5112 sc.exe
3428 sc.exe
4800 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

pid	process
3940	svchost.exe

description	pid	process	target process
PID 4232 set thread context of 3940	4232	cbabcmor.exe	svchost.exe

pid	process
5112	sc.exe
3428	sc.exe
4800	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

85eca08e0d409e4c94322f454b9978281d4418ec61521a2feab505c76c7a6b02.execbabcmor.exe

description	pid	process	target process
PID 1748 wrote to memory of 3412	1748	85eca08e0d409e4c94322f454b9978281d4418ec61521a2feab505c76c7a6b02.exe	cmd.exe
PID 1748 wrote to memory of 3412	1748	85eca08e0d409e4c94322f454b9978281d4418ec61521a2feab505c76c7a6b02.exe	cmd.exe
PID 1748 wrote to memory of 3412	1748	85eca08e0d409e4c94322f454b9978281d4418ec61521a2feab505c76c7a6b02.exe	cmd.exe
PID 1748 wrote to memory of 4752	1748	85eca08e0d409e4c94322f454b9978281d4418ec61521a2feab505c76c7a6b02.exe	cmd.exe
PID 1748 wrote to memory of 4752	1748	85eca08e0d409e4c94322f454b9978281d4418ec61521a2feab505c76c7a6b02.exe	cmd.exe
PID 1748 wrote to memory of 4752	1748	85eca08e0d409e4c94322f454b9978281d4418ec61521a2feab505c76c7a6b02.exe	cmd.exe
PID 1748 wrote to memory of 5112	1748	85eca08e0d409e4c94322f454b9978281d4418ec61521a2feab505c76c7a6b02.exe	sc.exe
PID 1748 wrote to memory of 5112	1748	85eca08e0d409e4c94322f454b9978281d4418ec61521a2feab505c76c7a6b02.exe	sc.exe
PID 1748 wrote to memory of 5112	1748	85eca08e0d409e4c94322f454b9978281d4418ec61521a2feab505c76c7a6b02.exe	sc.exe
PID 1748 wrote to memory of 3428	1748	85eca08e0d409e4c94322f454b9978281d4418ec61521a2feab505c76c7a6b02.exe	sc.exe
PID 1748 wrote to memory of 3428	1748	85eca08e0d409e4c94322f454b9978281d4418ec61521a2feab505c76c7a6b02.exe	sc.exe
PID 1748 wrote to memory of 3428	1748	85eca08e0d409e4c94322f454b9978281d4418ec61521a2feab505c76c7a6b02.exe	sc.exe
PID 1748 wrote to memory of 4800	1748	85eca08e0d409e4c94322f454b9978281d4418ec61521a2feab505c76c7a6b02.exe	sc.exe
PID 1748 wrote to memory of 4800	1748	85eca08e0d409e4c94322f454b9978281d4418ec61521a2feab505c76c7a6b02.exe	sc.exe
PID 1748 wrote to memory of 4800	1748	85eca08e0d409e4c94322f454b9978281d4418ec61521a2feab505c76c7a6b02.exe	sc.exe
PID 1748 wrote to memory of 4252	1748	85eca08e0d409e4c94322f454b9978281d4418ec61521a2feab505c76c7a6b02.exe	netsh.exe
PID 1748 wrote to memory of 4252	1748	85eca08e0d409e4c94322f454b9978281d4418ec61521a2feab505c76c7a6b02.exe	netsh.exe
PID 1748 wrote to memory of 4252	1748	85eca08e0d409e4c94322f454b9978281d4418ec61521a2feab505c76c7a6b02.exe	netsh.exe
PID 4232 wrote to memory of 3940	4232	cbabcmor.exe	svchost.exe
PID 4232 wrote to memory of 3940	4232	cbabcmor.exe	svchost.exe
PID 4232 wrote to memory of 3940	4232	cbabcmor.exe	svchost.exe
PID 4232 wrote to memory of 3940	4232	cbabcmor.exe	svchost.exe
PID 4232 wrote to memory of 3940	4232	cbabcmor.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\85eca08e0d409e4c94322f454b9978281d4418ec61521a2feab505c76c7a6b02.exe
"C:\Users\Admin\AppData\Local\Temp\85eca08e0d409e4c94322f454b9978281d4418ec61521a2feab505c76c7a6b02.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1748

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mbvwqrmk\
2⤵
PID:3412

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cbabcmor.exe" C:\Windows\SysWOW64\mbvwqrmk\
2⤵
PID:4752

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create mbvwqrmk binPath= "C:\Windows\SysWOW64\mbvwqrmk\cbabcmor.exe /d\"C:\Users\Admin\AppData\Local\Temp\85eca08e0d409e4c94322f454b9978281d4418ec61521a2feab505c76c7a6b02.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:5112

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description mbvwqrmk "wifi internet conection"
2⤵
- Launches sc.exe
PID:3428

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start mbvwqrmk
2⤵
- Launches sc.exe
PID:4800

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:4252

C:\Windows\SysWOW64\mbvwqrmk\cbabcmor.exe
C:\Windows\SysWOW64\mbvwqrmk\cbabcmor.exe /d"C:\Users\Admin\AppData\Local\Temp\85eca08e0d409e4c94322f454b9978281d4418ec61521a2feab505c76c7a6b02.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4232

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:3940

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

New Service

T1050

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

New Service

T1050

Defense Evasion

Disabling Security Tools

T1089

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\cbabcmor.exe
Filesize
14.9MB

MD5
ee4c9839d984654567a057692b826ad5

SHA1
e02e4bd3e0360d8e665af2798f627b3d27985751

SHA256
54eb1fd466270cd5f8c314067e45ae0f4fcf382f5cb6a7abc8f30af85010e3f3

SHA512
6343185a9b805bc51b4e989e80a6e5255263e5acfbd8bc581002a0cfdf1653281f5ee55bb962d385121be4efb79c0d4df388fa40d8460067d1df5daf81714603

Download Submit
C:\Windows\SysWOW64\mbvwqrmk\cbabcmor.exe
Filesize
14.9MB

MD5
ee4c9839d984654567a057692b826ad5

SHA1
e02e4bd3e0360d8e665af2798f627b3d27985751

SHA256
54eb1fd466270cd5f8c314067e45ae0f4fcf382f5cb6a7abc8f30af85010e3f3

SHA512
6343185a9b805bc51b4e989e80a6e5255263e5acfbd8bc581002a0cfdf1653281f5ee55bb962d385121be4efb79c0d4df388fa40d8460067d1df5daf81714603

Download Submit
memory/1748-162-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-126-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-123-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-124-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-125-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-164-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-127-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-128-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-129-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-130-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-131-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-133-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-132-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-135-0x0000000000580000-0x00000000006CA000-memory.dmp

Filesize
1.3MB

Download
memory/1748-137-0x0000000000580000-0x00000000006CA000-memory.dmp

Filesize
1.3MB

Download
memory/1748-136-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-138-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-139-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-140-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-141-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-142-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-143-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-144-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-145-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-146-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-147-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-148-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-149-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-150-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-151-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-163-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-153-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-154-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-155-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-156-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-157-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-158-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/1748-159-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-160-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-161-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-120-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-152-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-122-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-165-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-166-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-167-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-168-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-169-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/1748-175-0x0000000000580000-0x00000000006CA000-memory.dmp

Filesize
1.3MB

Download
memory/1748-221-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/1748-121-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/3412-172-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/3412-173-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/3412-174-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/3412-176-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/3412-170-0x0000000000000000-mapping.dmp

Download
memory/3412-171-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/3428-191-0x0000000000000000-mapping.dmp

Download
memory/3940-379-0x0000000000560000-0x0000000000575000-memory.dmp

Filesize
84KB

Download
memory/3940-333-0x0000000000569A6B-mapping.dmp

Download
memory/3940-488-0x0000000000560000-0x0000000000575000-memory.dmp

Filesize
84KB

Download
memory/4232-337-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/4232-334-0x000000000074D000-0x0000000000763000-memory.dmp

Filesize
88KB

Download
memory/4232-330-0x0000000000400000-0x000000000045C000-memory.dmp

Filesize
368KB

Download
memory/4232-329-0x0000000000590000-0x00000000006DA000-memory.dmp

Filesize
1.3MB

Download
memory/4232-328-0x000000000074D000-0x0000000000763000-memory.dmp

Filesize
88KB

Download
memory/4252-217-0x0000000000000000-mapping.dmp

Download
memory/4752-179-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/4752-181-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/4752-178-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/4752-180-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/4752-177-0x0000000000000000-mapping.dmp

Download
memory/4752-182-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/4800-204-0x0000000000000000-mapping.dmp

Download
memory/5112-185-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/5112-188-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/5112-184-0x0000000000000000-mapping.dmp

Download
memory/5112-190-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/5112-189-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/5112-187-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/5112-186-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/5112-192-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download
memory/5112-193-0x0000000077710000-0x000000007789E000-memory.dmp

Filesize
1.6MB

Download