tofsee | e0e9b2c08708db4d612eab542b25d89fa9c96737278650b25799c72b394754af

Analysis

max time kernel
145s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
25/06/2024, 13:06

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General

Target
0e2f6a22fb2c1ee834e3bb94a17fd98e_JaffaCakes118.exe
Size 170KB
Sample240625-qcb5navbml
SHA256 e0e9b2c08708db4d612eab542b25d89fa9c96737278650b25799c72b394754af
MD5 0e2f6a22fb2c1ee834e3bb94a17fd98e
SHA1 17963e95dc4076646a867ced2923b83b3f4d9391
SHA512 442326bf359037f1433fb391eefdfc048ab46ed3f19109cd8d5318b0e9d43f09bed055cbf28704b92cce7c76b721b62f6bc50546ed3577235428ba8de68e26a3
SSDEEP 3072:+yyL6e5KJOUM8GXLimIm+lLUntmwRYHPesOZUI5upr6rxE:+rWe8oiGUir5tm
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tofsee persistence trojan

Malware Config

Extracted

Family

tofsee

64.20.54.234
rgtryhbgddtyh.biz
wertdghbyrukl.ch

Signatures

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

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	0e2f6a22fb2c1ee834e3bb94a17fd98e_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
2652	aldymb.exe
2868	aldymb.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-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MSConfig = "\"C:\\Users\\Admin\\aldymb.exe\" /r"	0e2f6a22fb2c1ee834e3bb94a17fd98e_JaffaCakes118.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1340 set thread context of 1148	1340	0e2f6a22fb2c1ee834e3bb94a17fd98e_JaffaCakes118.exe	82
PID 2652 set thread context of 2868	2652	aldymb.exe	84
PID 2868 set thread context of 2156	2868	aldymb.exe	85

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
364	2156	WerFault.exe	85

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 1340 wrote to memory of 1148	1340	0e2f6a22fb2c1ee834e3bb94a17fd98e_JaffaCakes118.exe	82
PID 1340 wrote to memory of 1148	1340	0e2f6a22fb2c1ee834e3bb94a17fd98e_JaffaCakes118.exe	82
PID 1340 wrote to memory of 1148	1340	0e2f6a22fb2c1ee834e3bb94a17fd98e_JaffaCakes118.exe	82
PID 1340 wrote to memory of 1148	1340	0e2f6a22fb2c1ee834e3bb94a17fd98e_JaffaCakes118.exe	82
PID 1340 wrote to memory of 1148	1340	0e2f6a22fb2c1ee834e3bb94a17fd98e_JaffaCakes118.exe	82
PID 1340 wrote to memory of 1148	1340	0e2f6a22fb2c1ee834e3bb94a17fd98e_JaffaCakes118.exe	82
PID 1340 wrote to memory of 1148	1340	0e2f6a22fb2c1ee834e3bb94a17fd98e_JaffaCakes118.exe	82
PID 1340 wrote to memory of 1148	1340	0e2f6a22fb2c1ee834e3bb94a17fd98e_JaffaCakes118.exe	82
PID 1148 wrote to memory of 2652	1148	0e2f6a22fb2c1ee834e3bb94a17fd98e_JaffaCakes118.exe	83
PID 1148 wrote to memory of 2652	1148	0e2f6a22fb2c1ee834e3bb94a17fd98e_JaffaCakes118.exe	83
PID 1148 wrote to memory of 2652	1148	0e2f6a22fb2c1ee834e3bb94a17fd98e_JaffaCakes118.exe	83
PID 2652 wrote to memory of 2868	2652	aldymb.exe	84
PID 2652 wrote to memory of 2868	2652	aldymb.exe	84
PID 2652 wrote to memory of 2868	2652	aldymb.exe	84
PID 2652 wrote to memory of 2868	2652	aldymb.exe	84
PID 2652 wrote to memory of 2868	2652	aldymb.exe	84
PID 2652 wrote to memory of 2868	2652	aldymb.exe	84
PID 2652 wrote to memory of 2868	2652	aldymb.exe	84
PID 2652 wrote to memory of 2868	2652	aldymb.exe	84
PID 2868 wrote to memory of 2156	2868	aldymb.exe	85
PID 2868 wrote to memory of 2156	2868	aldymb.exe	85
PID 2868 wrote to memory of 2156	2868	aldymb.exe	85
PID 2868 wrote to memory of 2156	2868	aldymb.exe	85
PID 2868 wrote to memory of 2156	2868	aldymb.exe	85
PID 1148 wrote to memory of 3956	1148	0e2f6a22fb2c1ee834e3bb94a17fd98e_JaffaCakes118.exe	87
PID 1148 wrote to memory of 3956	1148	0e2f6a22fb2c1ee834e3bb94a17fd98e_JaffaCakes118.exe	87
PID 1148 wrote to memory of 3956	1148	0e2f6a22fb2c1ee834e3bb94a17fd98e_JaffaCakes118.exe	87

C:\Users\Admin\AppData\Local\Temp\0e2f6a22fb2c1ee834e3bb94a17fd98e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\0e2f6a22fb2c1ee834e3bb94a17fd98e_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1340
- C:\Users\Admin\AppData\Local\Temp\0e2f6a22fb2c1ee834e3bb94a17fd98e_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\0e2f6a22fb2c1ee834e3bb94a17fd98e_JaffaCakes118.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:1148
- - C:\Users\Admin\aldymb.exe
    "C:\Users\Admin\aldymb.exe" /r
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2652
  - - C:\Users\Admin\aldymb.exe
      "C:\Users\Admin\aldymb.exe" /r
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      Suspicious use of WriteProcessMemory
      PID:2868
    - - C:\Windows\SysWOW64\svchost.exe
        
        svchost.exe
        5⤵
        
        PID:2156
      - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2156 -s 320
        6⤵
        Program crash
        
        PID:364
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\4167.bat" "
    3⤵
    PID:3956

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 2156 -ip 2156
1⤵
PID:1240

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

4167.bat

Path C:\Users\Admin\AppData\Local\Temp\4167.bat
Size 117B
SHA256 c0dfc6e415eb41d361a9a3f3406b8739486af27558de225f9b7ff121ae21b0bb
MD5 0f1b739d6ddd0c30b87289281bf22b9f
SHA1 263b16cafcf98e33fd6b280398a98a274162bf2f
SHA512 23d168dc8a712030cbf08226198dd1952b20342835f0cb4f9f214613efb01d70185facf17aeeca40fecc7c289459fac50dd0a9fdb63b9512ba13101d8d6fe850
MD5 SHA1 SHA512

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aldymb.exe

Path C:\Users\Admin\aldymb.exe
Size 170KB
SHA256 e0e9b2c08708db4d612eab542b25d89fa9c96737278650b25799c72b394754af
MD5 0e2f6a22fb2c1ee834e3bb94a17fd98e
SHA1 17963e95dc4076646a867ced2923b83b3f4d9391
SHA512 442326bf359037f1433fb391eefdfc048ab46ed3f19109cd8d5318b0e9d43f09bed055cbf28704b92cce7c76b721b62f6bc50546ed3577235428ba8de68e26a3
SSDEEP 3072:+yyL6e5KJOUM8GXLimIm+lLUntmwRYHPesOZUI5upr6rxE:+rWe8oiGUir5tm
MD5 SHA1 SHA512 SSDEEP

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memory/1148-0-0x0000000000400000-0x0000000000410000-memory.dmp

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memory/1148-2-0x0000000000400000-0x0000000000410000-memory.dmp

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memory/1148-4-0x0000000000400000-0x0000000000410000-memory.dmp

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memory/1148-24-0x0000000000400000-0x0000000000410000-memory.dmp

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memory/2156-14-0x0000000000340000-0x0000000000350000-memory.dmp

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memory/2156-19-0x0000000000340000-0x0000000000350000-memory.dmp

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memory/2156-28-0x0000000000340000-0x0000000000350000-memory.dmp

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memory/2156-29-0x00000000003F0000-0x00000000003F1000-memory.dmp

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memory/2156-30-0x0000000000340000-0x0000000000350000-memory.dmp

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memory/2156-31-0x0000000000340000-0x0000000000350000-memory.dmp

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memory/2868-13-0x0000000000400000-0x0000000000410000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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