MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b5bcbfe8ba02879ac963d4f9ed48203c934e80edb58b814129ad836544f2c3a3. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


njrat


Vendor detections: 7


Intelligence 7 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b5bcbfe8ba02879ac963d4f9ed48203c934e80edb58b814129ad836544f2c3a3
SHA3-384 hash: 7ad91563a8b7165f46bdf73a3e317cd770613e635fcb24dd2d0323a32297b8e943dffadbbefe77f847db921cbc7e46b6
SHA1 hash: f577292bc5d33f293c9f2fea810fc61366cdec5c
MD5 hash: 97d30363eb7508bf13bc524c18896abd
humanhash: xray-emma-foxtrot-purple
File name:CITA FISCAL Nº 00964673335 15 ABRIL DE 2020.exe
Download: download sample
Signature njrat
Create hunting rule
File size:361'577 bytes
First seen:2020-08-13 05:49:47 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 24f4223e271413c25abad52fd456a9bc (21 x GuLoader, 15 x Loki, 10 x AgentTesla)
ssdeep 6144:0HfYbHL07Srlnuv9n6kEIu3lD7y+/+fHt7wbU29A82WAGr7ysGx7TA/wG:0QLu1nxQl/yJHt7758HyZ7TMF
Threatray 247 similar samples on MalwareBazaar
TLSH F77412073344C43FE6A18C744A1629BA6AB25E2F25395F47C3447FCDB8B2142AD1F96E
Reporter abuse_ch
Tags:exe NjRAT Outlook


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: NAM12-BN8-obe.outbound.protection.outlook.com
Sending IP: 40.92.21.55
From: FISCAL SECCIONAL <fiscalia-regional@hotmail.com>
Subject: ORDEN DE CAPTURA
Attachment: CITA FISCAL Nº 00964673335 15 ABRIL DE 2020.UUE (contains "CITA FISCAL Nº 00964673335 15 ABRIL DE 2020.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
223
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/44809/
Detection(s):
PUA.Win.Adware.Browserio-6725861-0
Create hunting rule

SecuriteInfo.com.BehavesLike.Win32.ObfusRansom.bc.6542.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Sending a UDP request
Creating a file
Creating a file in the %AppData% subdirectories
Launching a process
Transferring files using the Background Intelligent Transfer Service (BITS)
Enabling the 'hidden' option for recently created files
Moving a file to the %AppData% subdirectory
Creating a window
Unauthorized injection to a system process
Enabling autorun by creating a file
Result
Threat name:
Njrat
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
88 / 100
Link:
https://www.joesandbox.com/analysis/425092
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Changes the view of files in windows explorer (hidden files and folders)
Contains functionality to log keystrokes (.Net Source)
Hijacks the control flow in another process
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Overwrites code with unconditional jumps - possibly settings hooks in foreign process
Uses dynamic DNS services
Yara detected Njrat
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b5bcbfe8ba02879ac963d4f9ed48203c934e80edb58b814129ad836544f2c3a3/
Threat name:
Win32.Backdoor.Bladabhindi
Create hunting rule
Status:
Malicious
First seen:
2020-08-13 05:51:07 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ww6l72f2akdzvsld2t462sbahsju5ahnwwfycqjjvwbwkrhsyorq._file
Verdict:
malicious
Similar samples:
0f24e222f76b19a0f1995c70e3711ab2b1c7e3f41c5e915796e767fce361e2e3
njrat
46ceaed6d9f20fc2b5d51a63957ea0a5772f33ac4d58b1024cce8eb1c207567e
njrat
5c63c2887891a56e0465251c8112ce7a07fc70e782dbc2e80f45f670294d4285
njrat
5d9004bb38a2e4c6ee1528f75e8453e778d9f39a3e7d9f02ee7821eae65cf886
njrat
5e23eed104a5bd67c8ae3abe1f3554abac8500bf9f916992df36246b06f14419
njrat
72ec3dcd3d7a197c45c66605330968f86044d6a2ec37bf843e33b7f4668781f9
njrat
7ef7ff0660d406b237fd3253738d60a294c0273ca1436cf9ba87d5b2ea8d62d8
njrat
9ea8141b737b1dd5d56c800d4f84048014d83489f0fb3a78e42076a81186e30d
njrat
c2f42cfcfafad77546d57cbfde6a6f4c1c75d684a81304d1ec901285b1873bd3
njrat
fad58c442302c02a2750bc532c0c4705f6193e8cabb2acbc88181cdd328d6145
njrat
+ 237 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  9/10
Tags:
n/a
Link:
https://tria.ge/reports/200813-s5v1zjfw86/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Drops file in Program Files directory
Drops file in Program Files directory
Loads dropped DLL
Loads dropped DLL
ServiceHost packer
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Trojan
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/b5bcbfe8ba02879ac963d4f9ed48203c934e80edb58b814129ad836544f2c3a3

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:CAP_HookExKeylogger
Create hunting rule
Author:Brian C. Bell -- @biebsmalwareguy
Reference:https://github.com/DFIRnotes/rules/blob/master/CAP_HookExKeylogger.yar
Rule name:CN_disclosed_20180208_c
Create hunting rule
Author:Florian Roth
Description:Detects malware from disclosed CN malware set
Reference:https://twitter.com/cyberintproject/status/961714165550342146
Rule name:Njrat
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect njRAT in memory
Rule name:win_njrat_g1
Create hunting rule
Author:Daniel Plohmann <daniel.plohmann<at>fkie.fraunhofer.de>
Rule name:win_njrat_w1
Create hunting rule
Author:Brian Wallace @botnet_hunter
Description:Identify njRat

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

njrat

uue d7dfd69813e6a1c098cfe97696a4902cd4c1796f923ca8a179c2fb6066a91038

njrat

Executable exe b5bcbfe8ba02879ac963d4f9ed48203c934e80edb58b814129ad836544f2c3a3

(this sample)

  
Dropped by
MD5 c15afd8d041e129d623c088b2d5a793d
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 d7dfd69813e6a1c098cfe97696a4902cd4c1796f923ca8a179c2fb6066a91038
Cape
Cape
https://www.capesandbox.com/analysis/44809/

Comments