tofsee | 319e892be206faef2546ccc009a46cb2062b15bada048d98d24dcccb6b517555

General

Target

ff7353b61dcbc157e2f89034fdb72cf0_JaffaCakes118.exe
Size

130KB
MD5

ff7353b61dcbc157e2f89034fdb72cf0
SHA1

9748ef9fe2a118e4c5ef75c4927a995183b96e59
SHA256

319e892be206faef2546ccc009a46cb2062b15bada048d98d24dcccb6b517555
SHA512

a1e64ccd703eac90809c45276d939258925d52b00250dbeb1dc837e7096078dcb02dc7864fc2bbe321535df296561e04cf906379e5f56c8c6a8096f04f71b74a
SSDEEP

1536:c8Id8o7aomglQQGF+f1tUlho4swrUzgRXAnTumTO7MGFSjq0ccQL:o+o7ZmQQT+clzdUzW4imCBSjqTL

Score

10^/10

tofsee discovery persistence trojan

Malware Config

Extracted

Family

tofsee

C2

94.242.250.149

91.218.38.245

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
2932	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
1884	rejwbohp.exe

Loads dropped DLL 2 IoCs

pid	Process
848	ff7353b61dcbc157e2f89034fdb72cf0_JaffaCakes118.exe
848	ff7353b61dcbc157e2f89034fdb72cf0_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-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows\CurrentVersion\Run\MSConfig = "\"C:\\Users\\Admin\\rejwbohp.exe\""	ff7353b61dcbc157e2f89034fdb72cf0_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1884 set thread context of 2280	1884	rejwbohp.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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ff7353b61dcbc157e2f89034fdb72cf0_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rejwbohp.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
848	ff7353b61dcbc157e2f89034fdb72cf0_JaffaCakes118.exe
1884	rejwbohp.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 848 wrote to memory of 1884	848	ff7353b61dcbc157e2f89034fdb72cf0_JaffaCakes118.exe	30
PID 848 wrote to memory of 1884	848	ff7353b61dcbc157e2f89034fdb72cf0_JaffaCakes118.exe	30
PID 848 wrote to memory of 1884	848	ff7353b61dcbc157e2f89034fdb72cf0_JaffaCakes118.exe	30
PID 848 wrote to memory of 1884	848	ff7353b61dcbc157e2f89034fdb72cf0_JaffaCakes118.exe	30
PID 1884 wrote to memory of 2280	1884	rejwbohp.exe	31
PID 1884 wrote to memory of 2280	1884	rejwbohp.exe	31
PID 1884 wrote to memory of 2280	1884	rejwbohp.exe	31
PID 1884 wrote to memory of 2280	1884	rejwbohp.exe	31
PID 1884 wrote to memory of 2280	1884	rejwbohp.exe	31
PID 1884 wrote to memory of 2280	1884	rejwbohp.exe	31
PID 848 wrote to memory of 2932	848	ff7353b61dcbc157e2f89034fdb72cf0_JaffaCakes118.exe	32
PID 848 wrote to memory of 2932	848	ff7353b61dcbc157e2f89034fdb72cf0_JaffaCakes118.exe	32
PID 848 wrote to memory of 2932	848	ff7353b61dcbc157e2f89034fdb72cf0_JaffaCakes118.exe	32
PID 848 wrote to memory of 2932	848	ff7353b61dcbc157e2f89034fdb72cf0_JaffaCakes118.exe	32

C:\Users\Admin\AppData\Local\Temp\ff7353b61dcbc157e2f89034fdb72cf0_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ff7353b61dcbc157e2f89034fdb72cf0_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:848
- C:\Users\Admin\rejwbohp.exe
  "C:\Users\Admin\rejwbohp.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of UnmapMainImage
  - Suspicious use of WriteProcessMemory
  PID:1884
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2280
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\7742.bat" "
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2932

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\7742.bat

Filesize
266B

MD5
4b1ab0bd18560de50b909679547a61e3

SHA1
09b00025db301efc46d50fced1fabc0bd77dca2f

SHA256
05c8bda8c1a6cb69b34ab72efb6055b7fb7ed5eed9e6512c22af4f4f4697d397

SHA512
dee9437af7d27c2e6da959ab649d5223997fa5da2c0b2a925417d37147866454bba44d09d0490340c2d5853ede996f7aab745319c62087c2e92c84ae04e7dd4d

Download Submit
\Users\Admin\rejwbohp.exe

Filesize
41.8MB

MD5
57fcfb0f1197552fb881a13a4b84bf17

SHA1
2cead809d4ef2ced70af18b24e1a04a4dcb1dd93

SHA256
8cea5ec3887f88027f94e3e148012a3bb38e3962a89108e0302b5f5de47cb6ab

SHA512
2fd72a4753e6ded917e663580261b5fab6b3e019c1e13e34018f87a44e7151691823f80f94ad8a4c7b917266b644b705a8ad5feab898471d26d2373b66fa1d9a

Download Submit
memory/848-11-0x0000000000280000-0x00000000002AD000-memory.dmp

Filesize
180KB

Download
memory/848-2-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/848-12-0x0000000000280000-0x00000000002AD000-memory.dmp

Filesize
180KB

Download
memory/848-38-0x0000000000240000-0x0000000000252000-memory.dmp

Filesize
72KB

Download
memory/848-1-0x0000000000240000-0x0000000000252000-memory.dmp

Filesize
72KB

Download
memory/848-39-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/848-0-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/1884-14-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/1884-21-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1884-16-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1884-15-0x0000000000240000-0x0000000000252000-memory.dmp

Filesize
72KB

Download
memory/2280-27-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2280-20-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2280-41-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2280-24-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2280-30-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/2280-18-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2280-17-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2280-43-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads