Analysis
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max time kernel
150s -
max time network
122s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
26/01/2024, 21:09
Behavioral task
behavioral1
Sample
78641128d1339b6920de0b0c87792506.exe
Resource
win7-20231215-en
General
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Target
78641128d1339b6920de0b0c87792506.exe
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Size
402KB
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MD5
78641128d1339b6920de0b0c87792506
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SHA1
d7df45b7383f80d12f65f010f939e5d66bb704d5
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SHA256
d5e37030c7b9015b254892672789bc573aab50af39b9b4b9650ce506a74bdc4c
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SHA512
92f05bb255c64da66fe0157c7ad2112bc84964fc936fee9dde67f8f083d990ba7b8b0d795e0df86275dd98c4954ca63ec4cbd09433e1f01d802c43e4dd7b29d9
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SSDEEP
6144:hmaKVBGmE84IMNv55giU0pKiFYHxfx15RvOagakZBxkTN2gmeGcFnVQb/DAYbDg2:mSmLAuEY71fviagATFmebVQDcYca
Malware Config
Extracted
njrat
0.6.4
hhhmach.ddns.net:1177
5cd8f17f4086744065eb0992a09e05a2
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reg_key
5cd8f17f4086744065eb0992a09e05a2
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splitter
|'|'|
Signatures
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Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 4964 netsh.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation test.exe -
Drops startup file 2 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\5cd8f17f4086744065eb0992a09e05a2.exe Trojan.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\5cd8f17f4086744065eb0992a09e05a2.exe Trojan.exe -
Executes dropped EXE 2 IoCs
pid Process 3436 test.exe 32 Trojan.exe -
resource yara_rule behavioral2/memory/1956-0-0x0000000000400000-0x00000000004FA000-memory.dmp upx behavioral2/memory/1956-22-0x0000000000400000-0x00000000004FA000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\5cd8f17f4086744065eb0992a09e05a2 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Trojan.exe\" .." Trojan.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\5cd8f17f4086744065eb0992a09e05a2 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Trojan.exe\" .." Trojan.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Program crash 2 IoCs
pid pid_target Process procid_target 1616 1956 WerFault.exe 85 4808 1956 WerFault.exe 85 -
Suspicious behavior: EnumeratesProcesses 48 IoCs
pid Process 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe 32 Trojan.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 32 Trojan.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 1956 wrote to memory of 4836 1956 78641128d1339b6920de0b0c87792506.exe 93 PID 1956 wrote to memory of 4836 1956 78641128d1339b6920de0b0c87792506.exe 93 PID 1956 wrote to memory of 4836 1956 78641128d1339b6920de0b0c87792506.exe 93 PID 4836 wrote to memory of 3436 4836 cmd.exe 94 PID 4836 wrote to memory of 3436 4836 cmd.exe 94 PID 4836 wrote to memory of 3436 4836 cmd.exe 94 PID 3436 wrote to memory of 32 3436 test.exe 95 PID 3436 wrote to memory of 32 3436 test.exe 95 PID 3436 wrote to memory of 32 3436 test.exe 95 PID 32 wrote to memory of 4964 32 Trojan.exe 99 PID 32 wrote to memory of 4964 32 Trojan.exe 99 PID 32 wrote to memory of 4964 32 Trojan.exe 99
Processes
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C:\Users\Admin\AppData\Local\Temp\78641128d1339b6920de0b0c87792506.exe"C:\Users\Admin\AppData\Local\Temp\78641128d1339b6920de0b0c87792506.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:1956 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1956 -s 2562⤵
- Program crash
PID:1616
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c test.exe2⤵
- Suspicious use of WriteProcessMemory
PID:4836 -
C:\Users\Admin\AppData\Local\Temp\test.exetest.exe3⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:3436 -
C:\Users\Admin\AppData\Local\Temp\Trojan.exe"C:\Users\Admin\AppData\Local\Temp\Trojan.exe"4⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:32 -
C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Trojan.exe" "Trojan.exe" ENABLE5⤵
- Modifies Windows Firewall
PID:4964
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1956 -s 1642⤵
- Program crash
PID:4808
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1956 -ip 19561⤵PID:4084
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 1956 -ip 19561⤵PID:1636
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Replay Monitor
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Downloads
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Filesize
78KB
MD542c5854aa0709d8bf6c28ea82c67b9a5
SHA1124ea473f0572009de85a4a46f361109f4fae7d6
SHA25671e1add662041fee9ff0ddf0139154cf006538559af45f34047aac91efb1b8eb
SHA512c0f4412f2237138b5b66ecc285d7f44bacd67ae23feb0a55561cd4f7850ee6b0fd1b1dac3d2725ed4932aaf155b0fbda284a69b07594789bdb4cbcf0f499d95a