njrat | 3536c40290b9e7e9c3c47a96ab10fe3b737f334dd6779eaf70e35e91e10a677b

General

Target

SolaraBootstraper.exe
Size

290KB
MD5

288a089f6b8fe4c0983259c6daf093eb
SHA1

8eafbc8e6264167bc73c159bea34b1cfdb30d34f
SHA256

3536c40290b9e7e9c3c47a96ab10fe3b737f334dd6779eaf70e35e91e10a677b
SHA512

c04bf3530cd471d589efb8f7e6bdddb39422fc4284afc7f2d3645a646ebbee170d57dc57eff30cee05ef091c64c6a98586c5a887d25fe53e49531c137d285448
SSDEEP

6144:4XWloZM+rIkd8g+EtXHkv/iD4H/pduMzvExlwOffujfb8e1mYoiCYvZZ:JoZtL+EP8H/pduMzvExlwOffuvZR9xZ

Score

10^/10

njrat umbral hacked evasion persistence stealer trojan

Malware Config

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1241652478991269930/lqDzm5RXmNnZJ7VyPef0j8TTJEOPw48RTySfQrhy-HoHhnjd3f7_6UBfj32ly1VjvUlo

Extracted

Family

njrat

Version

im523

Botnet

HacKed

C2

having-jackson.gl.at.ply.gg:56522

Mutex

7c148ac38012fc3caa04b1bbe75feba0

Attributes

reg_key
7c148ac38012fc3caa04b1bbe75feba0
splitter
|'|'|

Signatures

Detect Umbral payload 3 IoCs

Processes:

resource	yara_rule
\Users\Admin\AppData\Local\Temp\Umbral.exe	family_umbral
behavioral1/memory/2060-19-0x0000000000400000-0x0000000000450000-memory.dmp	family_umbral
behavioral1/memory/3056-22-0x0000000000010000-0x0000000000050000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
Modifies Windows Firewall 2 TTPs 1 IoCs
evasion

Windows Service
T1543.003

Disable or Modify System Firewall
T1562.004

Processes:

netsh.exe

pid process

2804 netsh.exe

pid	process
2804	netsh.exe

Drops startup file 2 IoCs

Processes:

!FIXInj.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\7c148ac38012fc3caa04b1bbe75feba0.exe	!FIXInj.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\7c148ac38012fc3caa04b1bbe75feba0.exe	!FIXInj.exe

Executes dropped EXE 3 IoCs

Processes:

SolaraBootstrapper.exeUmbral.exe!FIXInj.exe

pid process

3016 SolaraBootstrapper.exe
3056 Umbral.exe
1944 !FIXInj.exe
Loads dropped DLL 3 IoCs

Processes:

SolaraBootstraper.exe

pid process

2060 SolaraBootstraper.exe
2060 SolaraBootstraper.exe
2060 SolaraBootstraper.exe

pid	process
3016	SolaraBootstrapper.exe
3056	Umbral.exe
1944	!FIXInj.exe

pid	process
2060	SolaraBootstraper.exe
2060	SolaraBootstraper.exe
2060	SolaraBootstraper.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

!FIXInj.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\Run\7c148ac38012fc3caa04b1bbe75feba0 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\!FIXInj.exe\" .."	!FIXInj.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\7c148ac38012fc3caa04b1bbe75feba0 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\!FIXInj.exe\" .."	!FIXInj.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service
T1102

Processes:

flow ioc

9 raw.githubusercontent.com
10 raw.githubusercontent.com
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

flow	ioc
9	raw.githubusercontent.com
10	raw.githubusercontent.com

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

SolaraBootstrapper.exeUmbral.exewmic.exe!FIXInj.exe

description	pid	process
Token: SeDebugPrivilege	3016	SolaraBootstrapper.exe
Token: SeDebugPrivilege	3056	Umbral.exe
Token: SeIncreaseQuotaPrivilege	2496	wmic.exe
Token: SeSecurityPrivilege	2496	wmic.exe
Token: SeTakeOwnershipPrivilege	2496	wmic.exe
Token: SeLoadDriverPrivilege	2496	wmic.exe
Token: SeSystemProfilePrivilege	2496	wmic.exe
Token: SeSystemtimePrivilege	2496	wmic.exe
Token: SeProfSingleProcessPrivilege	2496	wmic.exe
Token: SeIncBasePriorityPrivilege	2496	wmic.exe
Token: SeCreatePagefilePrivilege	2496	wmic.exe
Token: SeBackupPrivilege	2496	wmic.exe
Token: SeRestorePrivilege	2496	wmic.exe
Token: SeShutdownPrivilege	2496	wmic.exe
Token: SeDebugPrivilege	2496	wmic.exe
Token: SeSystemEnvironmentPrivilege	2496	wmic.exe
Token: SeRemoteShutdownPrivilege	2496	wmic.exe
Token: SeUndockPrivilege	2496	wmic.exe
Token: SeManageVolumePrivilege	2496	wmic.exe
Token: 33	2496	wmic.exe
Token: 34	2496	wmic.exe
Token: 35	2496	wmic.exe
Token: SeIncreaseQuotaPrivilege	2496	wmic.exe
Token: SeSecurityPrivilege	2496	wmic.exe
Token: SeTakeOwnershipPrivilege	2496	wmic.exe
Token: SeLoadDriverPrivilege	2496	wmic.exe
Token: SeSystemProfilePrivilege	2496	wmic.exe
Token: SeSystemtimePrivilege	2496	wmic.exe
Token: SeProfSingleProcessPrivilege	2496	wmic.exe
Token: SeIncBasePriorityPrivilege	2496	wmic.exe
Token: SeCreatePagefilePrivilege	2496	wmic.exe
Token: SeBackupPrivilege	2496	wmic.exe
Token: SeRestorePrivilege	2496	wmic.exe
Token: SeShutdownPrivilege	2496	wmic.exe
Token: SeDebugPrivilege	2496	wmic.exe
Token: SeSystemEnvironmentPrivilege	2496	wmic.exe
Token: SeRemoteShutdownPrivilege	2496	wmic.exe
Token: SeUndockPrivilege	2496	wmic.exe
Token: SeManageVolumePrivilege	2496	wmic.exe
Token: 33	2496	wmic.exe
Token: 34	2496	wmic.exe
Token: 35	2496	wmic.exe
Token: SeDebugPrivilege	1944	!FIXInj.exe
Token: 33	1944	!FIXInj.exe
Token: SeIncBasePriorityPrivilege	1944	!FIXInj.exe
Token: 33	1944	!FIXInj.exe
Token: SeIncBasePriorityPrivilege	1944	!FIXInj.exe
Token: 33	1944	!FIXInj.exe
Token: SeIncBasePriorityPrivilege	1944	!FIXInj.exe
Token: 33	1944	!FIXInj.exe
Token: SeIncBasePriorityPrivilege	1944	!FIXInj.exe
Token: 33	1944	!FIXInj.exe
Token: SeIncBasePriorityPrivilege	1944	!FIXInj.exe
Token: 33	1944	!FIXInj.exe
Token: SeIncBasePriorityPrivilege	1944	!FIXInj.exe
Token: 33	1944	!FIXInj.exe
Token: SeIncBasePriorityPrivilege	1944	!FIXInj.exe
Token: 33	1944	!FIXInj.exe
Token: SeIncBasePriorityPrivilege	1944	!FIXInj.exe
Token: 33	1944	!FIXInj.exe
Token: SeIncBasePriorityPrivilege	1944	!FIXInj.exe
Token: 33	1944	!FIXInj.exe
Token: SeIncBasePriorityPrivilege	1944	!FIXInj.exe
Token: 33	1944	!FIXInj.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

SolaraBootstraper.exeUmbral.exe!FIXInj.exe

description	pid	process	target process
PID 2060 wrote to memory of 3016	2060	SolaraBootstraper.exe	SolaraBootstrapper.exe
PID 2060 wrote to memory of 3016	2060	SolaraBootstraper.exe	SolaraBootstrapper.exe
PID 2060 wrote to memory of 3016	2060	SolaraBootstraper.exe	SolaraBootstrapper.exe
PID 2060 wrote to memory of 3016	2060	SolaraBootstraper.exe	SolaraBootstrapper.exe
PID 2060 wrote to memory of 3056	2060	SolaraBootstraper.exe	Umbral.exe
PID 2060 wrote to memory of 3056	2060	SolaraBootstraper.exe	Umbral.exe
PID 2060 wrote to memory of 3056	2060	SolaraBootstraper.exe	Umbral.exe
PID 2060 wrote to memory of 3056	2060	SolaraBootstraper.exe	Umbral.exe
PID 2060 wrote to memory of 1944	2060	SolaraBootstraper.exe	!FIXInj.exe
PID 2060 wrote to memory of 1944	2060	SolaraBootstraper.exe	!FIXInj.exe
PID 2060 wrote to memory of 1944	2060	SolaraBootstraper.exe	!FIXInj.exe
PID 2060 wrote to memory of 1944	2060	SolaraBootstraper.exe	!FIXInj.exe
PID 3056 wrote to memory of 2496	3056	Umbral.exe	wmic.exe
PID 3056 wrote to memory of 2496	3056	Umbral.exe	wmic.exe
PID 3056 wrote to memory of 2496	3056	Umbral.exe	wmic.exe
PID 1944 wrote to memory of 2804	1944	!FIXInj.exe	netsh.exe
PID 1944 wrote to memory of 2804	1944	!FIXInj.exe	netsh.exe
PID 1944 wrote to memory of 2804	1944	!FIXInj.exe	netsh.exe
PID 1944 wrote to memory of 2804	1944	!FIXInj.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\SolaraBootstraper.exe
"C:\Users\Admin\AppData\Local\Temp\SolaraBootstraper.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2060

C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.exe
"C:\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3016

C:\Users\Admin\AppData\Local\Temp\Umbral.exe
"C:\Users\Admin\AppData\Local\Temp\Umbral.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3056

C:\Windows\System32\Wbem\wmic.exe
"wmic.exe" csproduct get uuid
3⤵
- Suspicious use of AdjustPrivilegeToken
PID:2496

C:\Users\Admin\AppData\Local\Temp\!FIXInj.exe
"C:\Users\Admin\AppData\Local\Temp\!FIXInj.exe"
2⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1944

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\!FIXInj.exe" "!FIXInj.exe" ENABLE
3⤵
- Modifies Windows Firewall
PID:2804

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1

T1102

Impact

Resource Development

Reconnaissance

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Downloads

\Users\Admin\AppData\Local\Temp\!FIXInj.exe
Filesize
37KB

MD5
ad8378c96a922dcfe813935d1eec9ae4

SHA1
0e7ee31880298190258f5282f6cc2797fccdc134

SHA256
9a7b8171f8c6bd4bb61b7d8baf7dab921983ab7767705c3f1e1265704599ab98

SHA512
d38a7581ef5c3dcc8752fc2465ad698605bbd38bf380201623265e5ef121510d3f34116438727e60b3832e867e2ed4fd52081d58690690ff98b28cde80f6af5f

Download Submit
\Users\Admin\AppData\Local\Temp\SolaraBootstrapper.exe
Filesize
12KB

MD5
06f13f50c4580846567a644eb03a11f2

SHA1
39ee712b6dfc5a29a9c641d92c7467a2c4445984

SHA256
0636e8f9816b17d7cff26ef5d280ce1c1aae992cda8165c6f4574029258a08a9

SHA512
f5166a295bb0960e59c176eefa89c341563fdf0eec23a45576e0ee5bf7e8271cc35eb9dd56b11d9c0bbe789f2eac112643108c46be3341fa332cfcf39b4a90b9

Download Submit
\Users\Admin\AppData\Local\Temp\Umbral.exe
Filesize
230KB

MD5
9694195bfd2d5a2d219c548d8dc65cf0

SHA1
d1113d97bb1114025e9260e898f3a3048a5a6fda

SHA256
c58b3fa42e404b4a095ee2959a7975b392d7d6b6af6e4d11c1431e3a430dfb6e

SHA512
24bb0f6432b221fe621d81a1c730bd473e9c295aa66a2b50cbe670ad2260f942a915f7f9aef65e6dc28320b8208fc712d9bfdc43dbc1a607ed9393bb5c17051a

Download Submit
memory/2060-19-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/3016-21-0x0000000000F40000-0x0000000000F4A000-memory.dmp

Filesize
40KB

Download
memory/3056-22-0x0000000000010000-0x0000000000050000-memory.dmp

Filesize
256KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads