njrat | 555cd583a20def5bacd0f90aa29718cc7937d08811bc0558eb1739040928847b

General

Target

de9fa2fe4f0be05dbc0089d148a8f666_JaffaCakes118.exe
Size

43KB
MD5

de9fa2fe4f0be05dbc0089d148a8f666
SHA1

d1519b0150e92f3a0791b5b47aad76c1552cf241
SHA256

555cd583a20def5bacd0f90aa29718cc7937d08811bc0558eb1739040928847b
SHA512

cef5dc2ccac0b4140aee14f456c147f7f1208b15724ac67e2f30cbf3aa99a4609ec45f2b009425f639472f3ae19e19137ebfcab684c02d4857df9ab33065d662
SSDEEP

384:V8ZyWQF3VarE8yTTTfqtiWqEnkDai0+TzEIij+ZsNO3PlpJKkkjh/TzF7pWnmrgm:V69i3MY5TffqtpSDluXQ/ofL+L

Score

10^/10

njrat user discovery persistence trojan

Malware Config

Extracted

Family

njrat

Version

Njrat 0.7 Golden By Hassan Amiri

Botnet

User

C2

vlad71 hopto.org:5552

Mutex

Windows Update

Attributes

reg_key
Windows Update
splitter
|Hassan|

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat

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-1-5-21-2629364133-3182087385-364449604-1000\Control Panel\International\Geo\Nation	de9fa2fe4f0be05dbc0089d148a8f666_JaffaCakes118.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Java update.exe	sustem32.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Java update.exe	sustem32.exe

Executes dropped EXE 3 IoCs

pid	Process
4712	sustem32.exe
3952	Server.exe
2308	Server.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2629364133-3182087385-364449604-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\sustem32.exe\" .."	sustem32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\sustem32.exe\" .."	sustem32.exe

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 5 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	de9fa2fe4f0be05dbc0089d148a8f666_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sustem32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Server.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
404	schtasks.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
4772	de9fa2fe4f0be05dbc0089d148a8f666_JaffaCakes118.exe
4712	sustem32.exe

Suspicious use of AdjustPrivilegeToken 31 IoCs

description	pid	Process
Token: SeDebugPrivilege	4712	sustem32.exe
Token: 33	4712	sustem32.exe
Token: SeIncBasePriorityPrivilege	4712	sustem32.exe
Token: 33	4712	sustem32.exe
Token: SeIncBasePriorityPrivilege	4712	sustem32.exe
Token: 33	4712	sustem32.exe
Token: SeIncBasePriorityPrivilege	4712	sustem32.exe
Token: 33	4712	sustem32.exe
Token: SeIncBasePriorityPrivilege	4712	sustem32.exe
Token: 33	4712	sustem32.exe
Token: SeIncBasePriorityPrivilege	4712	sustem32.exe
Token: 33	4712	sustem32.exe
Token: SeIncBasePriorityPrivilege	4712	sustem32.exe
Token: 33	4712	sustem32.exe
Token: SeIncBasePriorityPrivilege	4712	sustem32.exe
Token: 33	4712	sustem32.exe
Token: SeIncBasePriorityPrivilege	4712	sustem32.exe
Token: 33	4712	sustem32.exe
Token: SeIncBasePriorityPrivilege	4712	sustem32.exe
Token: 33	4712	sustem32.exe
Token: SeIncBasePriorityPrivilege	4712	sustem32.exe
Token: 33	4712	sustem32.exe
Token: SeIncBasePriorityPrivilege	4712	sustem32.exe
Token: 33	4712	sustem32.exe
Token: SeIncBasePriorityPrivilege	4712	sustem32.exe
Token: 33	4712	sustem32.exe
Token: SeIncBasePriorityPrivilege	4712	sustem32.exe
Token: 33	4712	sustem32.exe
Token: SeIncBasePriorityPrivilege	4712	sustem32.exe
Token: 33	4712	sustem32.exe
Token: SeIncBasePriorityPrivilege	4712	sustem32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4772 wrote to memory of 4712	4772	de9fa2fe4f0be05dbc0089d148a8f666_JaffaCakes118.exe	88
PID 4772 wrote to memory of 4712	4772	de9fa2fe4f0be05dbc0089d148a8f666_JaffaCakes118.exe	88
PID 4772 wrote to memory of 4712	4772	de9fa2fe4f0be05dbc0089d148a8f666_JaffaCakes118.exe	88
PID 4712 wrote to memory of 404	4712	sustem32.exe	89
PID 4712 wrote to memory of 404	4712	sustem32.exe	89
PID 4712 wrote to memory of 404	4712	sustem32.exe	89

C:\Users\Admin\AppData\Local\Temp\de9fa2fe4f0be05dbc0089d148a8f666_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\de9fa2fe4f0be05dbc0089d148a8f666_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:4772
- C:\Users\Admin\AppData\Local\Temp\sustem32.exe
  "C:\Users\Admin\AppData\Local\Temp\sustem32.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4712
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn Server /tr C:\Users\Admin\AppData\Local\Temp/Server.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:404

C:\Users\Admin\AppData\Local\Temp\Server.exe
C:\Users\Admin\AppData\Local\Temp/Server.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3952

C:\Users\Admin\AppData\Local\Temp\Server.exe
C:\Users\Admin\AppData\Local\Temp/Server.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:2308

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

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\Microsoft\CLR_v4.0_32\UsageLogs\Server.exe.log

Filesize
507B

MD5
25d1b50e7c0d451f3d850eb54d27ca05

SHA1
a238807715c70a335f54e80d4855644b21a9e870

SHA256
650faa13e983c9046c9030f63a5fa1c33900432ec7cb3762e015da2e7c5b34a5

SHA512
4223a26b2fabefdf1c01443ccc7bd887464d27f02694379895a040c66db472d541218d501f1c01e1bd31012d079a31baf24e20882c32cf652a09a74e3bf385f5

Download Submit
C:\Users\Admin\AppData\Local\Temp\sustem32.exe

Filesize
43KB

MD5
de9fa2fe4f0be05dbc0089d148a8f666

SHA1
d1519b0150e92f3a0791b5b47aad76c1552cf241

SHA256
555cd583a20def5bacd0f90aa29718cc7937d08811bc0558eb1739040928847b

SHA512
cef5dc2ccac0b4140aee14f456c147f7f1208b15724ac67e2f30cbf3aa99a4609ec45f2b009425f639472f3ae19e19137ebfcab684c02d4857df9ab33065d662

Download Submit
memory/3952-28-0x00000000745F0000-0x0000000074DA0000-memory.dmp

Filesize
7.7MB

Download
memory/3952-26-0x00000000745F0000-0x0000000074DA0000-memory.dmp

Filesize
7.7MB

Download
memory/3952-25-0x00000000745F0000-0x0000000074DA0000-memory.dmp

Filesize
7.7MB

Download
memory/4712-22-0x0000000005150000-0x000000000515A000-memory.dmp

Filesize
40KB

Download
memory/4712-16-0x00000000745F0000-0x0000000074DA0000-memory.dmp

Filesize
7.7MB

Download
memory/4712-17-0x00000000745F0000-0x0000000074DA0000-memory.dmp

Filesize
7.7MB

Download
memory/4712-20-0x00000000745F0000-0x0000000074DA0000-memory.dmp

Filesize
7.7MB

Download
memory/4712-21-0x00000000745F0000-0x0000000074DA0000-memory.dmp

Filesize
7.7MB

Download
memory/4772-5-0x00000000059C0000-0x0000000005A52000-memory.dmp

Filesize
584KB

Download
memory/4772-15-0x00000000745F0000-0x0000000074DA0000-memory.dmp

Filesize
7.7MB

Download
memory/4772-0-0x00000000745FE000-0x00000000745FF000-memory.dmp

Filesize
4KB

Download
memory/4772-4-0x00000000745F0000-0x0000000074DA0000-memory.dmp

Filesize
7.7MB

Download
memory/4772-3-0x0000000005ED0000-0x0000000006474000-memory.dmp

Filesize
5.6MB

Download
memory/4772-2-0x00000000055E0000-0x000000000567C000-memory.dmp

Filesize
624KB

Download
memory/4772-1-0x0000000000C10000-0x0000000000C22000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads