tofsee | 62c10c55dac6618eff4716e89de4bae41c429102fae8cae2f0ffc86a05ad82e2

General

Target

71efd5f8d2ad4c891d4d52f2cce17561_JaffaCakes118.exe
Size

144KB
MD5

71efd5f8d2ad4c891d4d52f2cce17561
SHA1

f34013094d0de6756de5c4979181e1a468836454
SHA256

62c10c55dac6618eff4716e89de4bae41c429102fae8cae2f0ffc86a05ad82e2
SHA512

0f8bab954b18c6e57a3bd0b1b685a5c4d4b194ab30c4b0e8a192cf57d9343c33e7b3f2ed9cb8a815f931b702c528d01ac58f30b8bfa3921854b285cd899bd7b0
SSDEEP

3072:XNfr+k4XY4h+PhzjzrOdt9lES2jbxWGqe:XNf14D+PhznrOdmSbGqe

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

Deletes itself 1 IoCs

pid	Process
2864	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2272	ivansfyg.exe

Loads dropped DLL 2 IoCs

pid	Process
1928	71efd5f8d2ad4c891d4d52f2cce17561_JaffaCakes118.exe
1928	71efd5f8d2ad4c891d4d52f2cce17561_JaffaCakes118.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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\MSConfig = "\"C:\\Users\\Admin\\ivansfyg.exe\""	71efd5f8d2ad4c891d4d52f2cce17561_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2272 set thread context of 1920	2272	ivansfyg.exe	31

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 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	71efd5f8d2ad4c891d4d52f2cce17561_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ivansfyg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1928	71efd5f8d2ad4c891d4d52f2cce17561_JaffaCakes118.exe
2272	ivansfyg.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1928 wrote to memory of 2272	1928	71efd5f8d2ad4c891d4d52f2cce17561_JaffaCakes118.exe	30
PID 1928 wrote to memory of 2272	1928	71efd5f8d2ad4c891d4d52f2cce17561_JaffaCakes118.exe	30
PID 1928 wrote to memory of 2272	1928	71efd5f8d2ad4c891d4d52f2cce17561_JaffaCakes118.exe	30
PID 1928 wrote to memory of 2272	1928	71efd5f8d2ad4c891d4d52f2cce17561_JaffaCakes118.exe	30
PID 2272 wrote to memory of 1920	2272	ivansfyg.exe	31
PID 2272 wrote to memory of 1920	2272	ivansfyg.exe	31
PID 2272 wrote to memory of 1920	2272	ivansfyg.exe	31
PID 2272 wrote to memory of 1920	2272	ivansfyg.exe	31
PID 2272 wrote to memory of 1920	2272	ivansfyg.exe	31
PID 2272 wrote to memory of 1920	2272	ivansfyg.exe	31
PID 1928 wrote to memory of 2864	1928	71efd5f8d2ad4c891d4d52f2cce17561_JaffaCakes118.exe	32
PID 1928 wrote to memory of 2864	1928	71efd5f8d2ad4c891d4d52f2cce17561_JaffaCakes118.exe	32
PID 1928 wrote to memory of 2864	1928	71efd5f8d2ad4c891d4d52f2cce17561_JaffaCakes118.exe	32
PID 1928 wrote to memory of 2864	1928	71efd5f8d2ad4c891d4d52f2cce17561_JaffaCakes118.exe	32

C:\Users\Admin\AppData\Local\Temp\71efd5f8d2ad4c891d4d52f2cce17561_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\71efd5f8d2ad4c891d4d52f2cce17561_JaffaCakes118.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:1928
- C:\Users\Admin\ivansfyg.exe
  "C:\Users\Admin\ivansfyg.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of UnmapMainImage
  - Suspicious use of WriteProcessMemory
  PID:2272
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1920
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\4185.bat" "
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2864

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

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\4185.bat

Filesize
266B

MD5
9eea7abfb4d49faa6f8a741045e6ce12

SHA1
82300c781f27ed47fb876837e85d06aed51573ec

SHA256
e48bf0d52c54ac76446b6a2ba61381d831fe120d33df23635ee6d8ff5c1c3687

SHA512
82e6a16ec9550b8f63c60ed49e18a96110a42eca1eaece84b46d1a3f8064468be5b91de3464f6470612ae17f7d0f4933d0a61a49e96b9b4276f0bb11990636e9

Download Submit
\Users\Admin\ivansfyg.exe

Filesize
46.9MB

MD5
737f1b6c27f43893341d0015acadd199

SHA1
a0ffa614d0f809050c227eaafbf79749b9a79c78

SHA256
f89ace85448b4864d1071ec92a3e3a11f42cb23858a9a1a4914b492d0ee804e7

SHA512
f94fa8ff4dc2210b0a39977eb72405484b340bb55339a0b168d81516bfbc3b6265ac28f5d04c8453666e9fb620ba001b10aa5fa9285a8a8934b6c313ab2c8756

Download Submit
memory/1920-16-0x00000000000C0000-0x00000000000D2000-memory.dmp

Filesize
72KB

Download
memory/1920-20-0x00000000000C0000-0x00000000000D2000-memory.dmp

Filesize
72KB

Download
memory/1920-13-0x00000000000C0000-0x00000000000D2000-memory.dmp

Filesize
72KB

Download
memory/1920-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1920-38-0x00000000000C0000-0x00000000000D2000-memory.dmp

Filesize
72KB

Download
memory/1920-34-0x00000000000C0000-0x00000000000D2000-memory.dmp

Filesize
72KB

Download
memory/1920-21-0x00000000000C0000-0x00000000000D2000-memory.dmp

Filesize
72KB

Download
memory/1920-32-0x0000000000150000-0x0000000000151000-memory.dmp

Filesize
4KB

Download
memory/1928-1-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1928-0-0x0000000000240000-0x0000000000252000-memory.dmp

Filesize
72KB

Download
memory/1928-36-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1928-35-0x0000000000240000-0x0000000000252000-memory.dmp

Filesize
72KB

Download
memory/2272-12-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2272-17-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2272-11-0x00000000003D0000-0x00000000003E2000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads