njrat | 6c65d6bc349fbaf7b54b3bd42dd16b32c62b97a48ee74f3d40ef8398bcf8f359

General

Target

a63289f40761e94235e55b81499db96f_JaffaCakes118.exe
Size

43KB
MD5

a63289f40761e94235e55b81499db96f
SHA1

bc67a8f3e46d6060c22dfa6f308e94a7eb35bfc0
SHA256

6c65d6bc349fbaf7b54b3bd42dd16b32c62b97a48ee74f3d40ef8398bcf8f359
SHA512

c2a8b7ccadfc310c4d08e97da6f83422fcc949144e6073d7cf39c9881a7ad8778e4c847782ece20e6c0fd587dc01b31b67f26edf01e813567594b18492a5e330
SSDEEP

384:88Zy+FgyCEFmVoyblVM38K0EBEzMghwzEIij+ZsNO3PlpJKkkjh/TzF7pWncagrq:86nFgyVAVlbb2fOQgQuXQ/ope+L

Score

10^/10

njrat user1 persistence trojan

Malware Config

Extracted

Family

njrat

Version

Njrat 0.7 Golden By Hassan Amiri

Botnet

User1

C2

csgo98437.ddns.net:1604

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-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	a63289f40761e94235e55b81499db96f_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	steamcommon.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Java update.exe	steamcommon.exe

Executes dropped EXE 4 IoCs

pid	Process
948	steamcommon.exe
3504	Server.exe
4664	Server.exe
3244	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-1-5-21-1181767204-2009306918-3718769404-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Roaming\\steamcommon.exe\" .."	steamcommon.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Roaming\\steamcommon.exe\" .."	steamcommon.exe

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

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

persistence

Scheduled Task/Job

T1053

pid	Process
2224	schtasks.exe

Suspicious behavior: GetForegroundWindowSpam 3 IoCs

pid	Process
2456	a63289f40761e94235e55b81499db96f_JaffaCakes118.exe
948	steamcommon.exe
3504	Server.exe

Suspicious use of AdjustPrivilegeToken 31 IoCs

description	pid	Process
Token: SeDebugPrivilege	948	steamcommon.exe
Token: 33	948	steamcommon.exe
Token: SeIncBasePriorityPrivilege	948	steamcommon.exe
Token: 33	948	steamcommon.exe
Token: SeIncBasePriorityPrivilege	948	steamcommon.exe
Token: 33	948	steamcommon.exe
Token: SeIncBasePriorityPrivilege	948	steamcommon.exe
Token: 33	948	steamcommon.exe
Token: SeIncBasePriorityPrivilege	948	steamcommon.exe
Token: 33	948	steamcommon.exe
Token: SeIncBasePriorityPrivilege	948	steamcommon.exe
Token: 33	948	steamcommon.exe
Token: SeIncBasePriorityPrivilege	948	steamcommon.exe
Token: 33	948	steamcommon.exe
Token: SeIncBasePriorityPrivilege	948	steamcommon.exe
Token: 33	948	steamcommon.exe
Token: SeIncBasePriorityPrivilege	948	steamcommon.exe
Token: 33	948	steamcommon.exe
Token: SeIncBasePriorityPrivilege	948	steamcommon.exe
Token: 33	948	steamcommon.exe
Token: SeIncBasePriorityPrivilege	948	steamcommon.exe
Token: 33	948	steamcommon.exe
Token: SeIncBasePriorityPrivilege	948	steamcommon.exe
Token: 33	948	steamcommon.exe
Token: SeIncBasePriorityPrivilege	948	steamcommon.exe
Token: 33	948	steamcommon.exe
Token: SeIncBasePriorityPrivilege	948	steamcommon.exe
Token: 33	948	steamcommon.exe
Token: SeIncBasePriorityPrivilege	948	steamcommon.exe
Token: 33	948	steamcommon.exe
Token: SeIncBasePriorityPrivilege	948	steamcommon.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2456 wrote to memory of 948	2456	a63289f40761e94235e55b81499db96f_JaffaCakes118.exe	93
PID 2456 wrote to memory of 948	2456	a63289f40761e94235e55b81499db96f_JaffaCakes118.exe	93
PID 2456 wrote to memory of 948	2456	a63289f40761e94235e55b81499db96f_JaffaCakes118.exe	93
PID 948 wrote to memory of 2224	948	steamcommon.exe	96
PID 948 wrote to memory of 2224	948	steamcommon.exe	96
PID 948 wrote to memory of 2224	948	steamcommon.exe	96

C:\Users\Admin\AppData\Local\Temp\a63289f40761e94235e55b81499db96f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a63289f40761e94235e55b81499db96f_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:2456
- C:\Users\Admin\AppData\Roaming\steamcommon.exe
  "C:\Users\Admin\AppData\Roaming\steamcommon.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:948
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn Server /tr C:\Users\Admin\AppData\Local\Temp/Server.exe
    3⤵
    - Creates scheduled task(s)
    PID:2224

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=1304,i,2607710392823067546,4648797561512801463,262144 --variations-seed-version --mojo-platform-channel-handle=4360 /prefetch:8
1⤵
PID:4424

C:\Users\Admin\AppData\Local\Temp\Server.exe
C:\Users\Admin\AppData\Local\Temp/Server.exe
1⤵
- Executes dropped EXE
- Suspicious behavior: GetForegroundWindowSpam
PID:3504

C:\Users\Admin\AppData\Local\Temp\Server.exe
C:\Users\Admin\AppData\Local\Temp/Server.exe
1⤵
- Executes dropped EXE
PID:4664

C:\Users\Admin\AppData\Local\Temp\Server.exe
C:\Users\Admin\AppData\Local\Temp/Server.exe
1⤵
- Executes dropped EXE
PID:3244

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

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\Roaming\steamcommon.exe

Filesize
43KB

MD5
a63289f40761e94235e55b81499db96f

SHA1
bc67a8f3e46d6060c22dfa6f308e94a7eb35bfc0

SHA256
6c65d6bc349fbaf7b54b3bd42dd16b32c62b97a48ee74f3d40ef8398bcf8f359

SHA512
c2a8b7ccadfc310c4d08e97da6f83422fcc949144e6073d7cf39c9881a7ad8778e4c847782ece20e6c0fd587dc01b31b67f26edf01e813567594b18492a5e330

Download Submit
memory/948-25-0x00000000058B0000-0x00000000058BA000-memory.dmp

Filesize
40KB

Download
memory/948-23-0x0000000074A50000-0x0000000075200000-memory.dmp

Filesize
7.7MB

Download
memory/948-17-0x0000000074A50000-0x0000000075200000-memory.dmp

Filesize
7.7MB

Download
memory/948-15-0x0000000074A50000-0x0000000075200000-memory.dmp

Filesize
7.7MB

Download
memory/2456-16-0x0000000074A50000-0x0000000075200000-memory.dmp

Filesize
7.7MB

Download
memory/2456-5-0x0000000005CE0000-0x0000000005D72000-memory.dmp

Filesize
584KB

Download
memory/2456-0-0x0000000074A5E000-0x0000000074A5F000-memory.dmp

Filesize
4KB

Download
memory/2456-4-0x0000000074A50000-0x0000000075200000-memory.dmp

Filesize
7.7MB

Download
memory/2456-3-0x00000000061F0000-0x0000000006794000-memory.dmp

Filesize
5.6MB

Download
memory/2456-2-0x00000000058B0000-0x000000000594C000-memory.dmp

Filesize
624KB

Download
memory/2456-1-0x0000000000F20000-0x0000000000F32000-memory.dmp

Filesize
72KB

Download
memory/3504-22-0x0000000074A50000-0x0000000075200000-memory.dmp

Filesize
7.7MB

Download
memory/3504-24-0x0000000074A50000-0x0000000075200000-memory.dmp

Filesize
7.7MB

Download
memory/3504-27-0x0000000074A50000-0x0000000075200000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads