tofsee | 2e0a35235d3eaf1073af214c45b50f60639cd9e9050b990611302493caf666a5

General

Target

2e0a35235d3eaf1073af214c45b50f60639cd9e9050b990611302493caf666a5.exe
Size

137KB
MD5

2ccea0b6d24c740b88eb1ac98db1548f
SHA1

38fc1c6b54b9d0804340d99f9e0c14bd566c4dad
SHA256

2e0a35235d3eaf1073af214c45b50f60639cd9e9050b990611302493caf666a5
SHA512

a0b225e1835efd43fb69b2c429da8bef2a30a518ab59940e9d35bab45cc37c1d5817ede5f07b5995ceec2d0d292fb850d736003a8222a43c8214432addce5d0e

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

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

jhvhidbh.exe

pid process

3012 jhvhidbh.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

1452 netsh.exe

pid	process
3012	jhvhidbh.exe

pid	process
1452	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\zedkokjx\ImagePath = "C:\\Windows\\SysWOW64\\zedkokjx\\jhvhidbh.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

Processes:

2e0a35235d3eaf1073af214c45b50f60639cd9e9050b990611302493caf666a5.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	2e0a35235d3eaf1073af214c45b50f60639cd9e9050b990611302493caf666a5.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

jhvhidbh.exe

description pid process target process

PID 3012 set thread context of 1296 3012 jhvhidbh.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

4904 sc.exe
1204 sc.exe
4832 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	pid	process	target process
PID 3012 set thread context of 1296	3012	jhvhidbh.exe	svchost.exe

pid	process
4904	sc.exe
1204	sc.exe
4832	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

2e0a35235d3eaf1073af214c45b50f60639cd9e9050b990611302493caf666a5.exejhvhidbh.exe

description	pid	process	target process
PID 3112 wrote to memory of 4952	3112	2e0a35235d3eaf1073af214c45b50f60639cd9e9050b990611302493caf666a5.exe	cmd.exe
PID 3112 wrote to memory of 4952	3112	2e0a35235d3eaf1073af214c45b50f60639cd9e9050b990611302493caf666a5.exe	cmd.exe
PID 3112 wrote to memory of 4952	3112	2e0a35235d3eaf1073af214c45b50f60639cd9e9050b990611302493caf666a5.exe	cmd.exe
PID 3112 wrote to memory of 648	3112	2e0a35235d3eaf1073af214c45b50f60639cd9e9050b990611302493caf666a5.exe	cmd.exe
PID 3112 wrote to memory of 648	3112	2e0a35235d3eaf1073af214c45b50f60639cd9e9050b990611302493caf666a5.exe	cmd.exe
PID 3112 wrote to memory of 648	3112	2e0a35235d3eaf1073af214c45b50f60639cd9e9050b990611302493caf666a5.exe	cmd.exe
PID 3112 wrote to memory of 1204	3112	2e0a35235d3eaf1073af214c45b50f60639cd9e9050b990611302493caf666a5.exe	sc.exe
PID 3112 wrote to memory of 1204	3112	2e0a35235d3eaf1073af214c45b50f60639cd9e9050b990611302493caf666a5.exe	sc.exe
PID 3112 wrote to memory of 1204	3112	2e0a35235d3eaf1073af214c45b50f60639cd9e9050b990611302493caf666a5.exe	sc.exe
PID 3112 wrote to memory of 4832	3112	2e0a35235d3eaf1073af214c45b50f60639cd9e9050b990611302493caf666a5.exe	sc.exe
PID 3112 wrote to memory of 4832	3112	2e0a35235d3eaf1073af214c45b50f60639cd9e9050b990611302493caf666a5.exe	sc.exe
PID 3112 wrote to memory of 4832	3112	2e0a35235d3eaf1073af214c45b50f60639cd9e9050b990611302493caf666a5.exe	sc.exe
PID 3112 wrote to memory of 4904	3112	2e0a35235d3eaf1073af214c45b50f60639cd9e9050b990611302493caf666a5.exe	sc.exe
PID 3112 wrote to memory of 4904	3112	2e0a35235d3eaf1073af214c45b50f60639cd9e9050b990611302493caf666a5.exe	sc.exe
PID 3112 wrote to memory of 4904	3112	2e0a35235d3eaf1073af214c45b50f60639cd9e9050b990611302493caf666a5.exe	sc.exe
PID 3112 wrote to memory of 1452	3112	2e0a35235d3eaf1073af214c45b50f60639cd9e9050b990611302493caf666a5.exe	netsh.exe
PID 3112 wrote to memory of 1452	3112	2e0a35235d3eaf1073af214c45b50f60639cd9e9050b990611302493caf666a5.exe	netsh.exe
PID 3112 wrote to memory of 1452	3112	2e0a35235d3eaf1073af214c45b50f60639cd9e9050b990611302493caf666a5.exe	netsh.exe
PID 3012 wrote to memory of 1296	3012	jhvhidbh.exe	svchost.exe
PID 3012 wrote to memory of 1296	3012	jhvhidbh.exe	svchost.exe
PID 3012 wrote to memory of 1296	3012	jhvhidbh.exe	svchost.exe
PID 3012 wrote to memory of 1296	3012	jhvhidbh.exe	svchost.exe
PID 3012 wrote to memory of 1296	3012	jhvhidbh.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\2e0a35235d3eaf1073af214c45b50f60639cd9e9050b990611302493caf666a5.exe
"C:\Users\Admin\AppData\Local\Temp\2e0a35235d3eaf1073af214c45b50f60639cd9e9050b990611302493caf666a5.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3112

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zedkokjx\
2⤵
PID:4952

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jhvhidbh.exe" C:\Windows\SysWOW64\zedkokjx\
2⤵
PID:648

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create zedkokjx binPath= "C:\Windows\SysWOW64\zedkokjx\jhvhidbh.exe /d\"C:\Users\Admin\AppData\Local\Temp\2e0a35235d3eaf1073af214c45b50f60639cd9e9050b990611302493caf666a5.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:1204

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description zedkokjx "wifi internet conection"
2⤵
- Launches sc.exe
PID:4832

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start zedkokjx
2⤵
- Launches sc.exe
PID:4904

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:1452

C:\Windows\SysWOW64\zedkokjx\jhvhidbh.exe
C:\Windows\SysWOW64\zedkokjx\jhvhidbh.exe /d"C:\Users\Admin\AppData\Local\Temp\2e0a35235d3eaf1073af214c45b50f60639cd9e9050b990611302493caf666a5.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3012

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
PID:1296

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

New Service

1

T1050

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

New Service

1

T1050

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\jhvhidbh.exe
Filesize
10.9MB

MD5
4755c84f33b4bb1a31250fe15a5733dc

SHA1
fd31d71b790a511105f90b1eae808a08f61c74a4

SHA256
fcef92fa34c4afbc4a627d603a9cbe5e229b36c963d6f60a17d6e2843939ec5f

SHA512
f40e39e1b8469e3d1556fb4afd4bad1f0b65b84f32dbc04462fb3c2fde90287576a3777f6343c6fbb346d3d1296b76638a9e991950741578031075ec9c5f7cb5

Download Submit
C:\Windows\SysWOW64\zedkokjx\jhvhidbh.exe
Filesize
10.9MB

MD5
4755c84f33b4bb1a31250fe15a5733dc

SHA1
fd31d71b790a511105f90b1eae808a08f61c74a4

SHA256
fcef92fa34c4afbc4a627d603a9cbe5e229b36c963d6f60a17d6e2843939ec5f

SHA512
f40e39e1b8469e3d1556fb4afd4bad1f0b65b84f32dbc04462fb3c2fde90287576a3777f6343c6fbb346d3d1296b76638a9e991950741578031075ec9c5f7cb5

Download Submit
memory/648-132-0x0000000000000000-mapping.dmp

Download
memory/1204-134-0x0000000000000000-mapping.dmp

Download
memory/1296-140-0x0000000000000000-mapping.dmp

Download
memory/1296-145-0x0000000000680000-0x0000000000695000-memory.dmp

Filesize
84KB

Download
memory/1296-144-0x0000000000680000-0x0000000000695000-memory.dmp

Filesize
84KB

Download
memory/1296-143-0x0000000000680000-0x0000000000695000-memory.dmp

Filesize
84KB

Download
memory/1296-141-0x0000000000680000-0x0000000000695000-memory.dmp

Filesize
84KB

Download
memory/1452-137-0x0000000000000000-mapping.dmp

Download
memory/3012-139-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/3112-130-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/4832-135-0x0000000000000000-mapping.dmp

Download
memory/4904-136-0x0000000000000000-mapping.dmp

Download
memory/4952-131-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads