MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1077313e39d5064c18f7c544fef3c9e53b35ec2c80bc406ded414d645e74649d. 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: 18

Intelligence 18 IOCs YARA 25 File information Comments

SHA256 hash:	1077313e39d5064c18f7c544fef3c9e53b35ec2c80bc406ded414d645e74649d
SHA3-384 hash:	273db7a78115da7cdc11731874d236cfdf5504f48c350c4951ca2b3a7bf53b548e4936d49b29c424e57fdab8c73c39f8
SHA1 hash:	95b0c5e5825af6ed8f47d80d2982a236590a385b
MD5 hash:	c5bd2612fba05be7959e44fde6092130
humanhash:	solar-freddie-three-green
File name:	nowe zamówienie pdf.exe
Download:	download sample
Signature	njrat Create hunting rule
File size:	664'064 bytes
First seen:	2025-06-25 08:15:50 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep	12288:Maa1/nkJs2Io8g5d1pUxHa7Z7daEiYVVjMjvsbvIUkDnmP/1cAoZUQAVIksDxA:yFkJs2UghWlMQpYHjeLmP/1mUfVI/
Threatray	4'975 similar samples on MalwareBazaar
TLSH	T196E402586356EF23C8E507F01A30E23113B6BDDFA821D3068ED6ECE7782176869516DB
TrID	71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 10.2% (.EXE) Win64 Executable (generic) (10522/11/4) 6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 4.3% (.EXE) Win32 Executable (generic) (4504/4/1) 2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika	pebin
Reporter	maciejsrocz
Tags:	exe NjRAT

Intelligence

File Origin

# of uploads :

# of downloads :

491

Origin country :

Vendor Threat Intelligence

Malware family:

formbook

ID:

File name:

rl_1077313e39d5064c18f7c544fef3c9e53b35ec2c80bc406ded414d645e74649d

Verdict:

Malicious activity

Analysis date:

2025-06-25 08:17:11 UTC

Tags:

netreactor formbook stealer xloader

Link:

https://app.any.run/tasks/4e3c362e-3734-4b56-a48c-c8bea18a988b

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Detection:

Formbook

Link:

https://www.capesandbox.com/analysis/11066/

Detection(s):

SecuriteInfo.com.Win32.MalwareX-gen.5346.1468.UNOFFICIAL

Verdict:

Malicious

Score:

92.5%

Link:

https://cyber-fortress.com/docs/result/index.php?id=685bb05d32ed47a3a8d6ed97

Tags:

underscore micro spawn shell

Result

Verdict:

Malware

Maliciousness:

Behaviour

Enabling the 'hidden' option for recently created files

Adding an access-denied ACE

Creating a file in the %temp% directory

Launching a process

Creating a file

Launching cmd.exe command interpreter

Setting browser functions hooks

Searching for the window

Creating a window

Сreating synchronization primitives

Creating a process with a hidden window

Creating a file in the %AppData% directory

Forced shutdown of a system process

Adding an exclusion to Microsoft Defender

Enabling autorun by creating a file

Unauthorized injection to a system process

Unauthorized injection to a browser process

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

packed packed packer_detected vbnet

Link:

https://www.filescan.io/uploads/685bb0623faf8fcd7d411243/reports/cdb07991-2d2d-4314-9c15-a600a088fc41/overview

Malware family:

Formbook

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/a844f001-d8fe-4271-a24b-3bbcf2ea597b

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/1077313e39d5064c18f7c544fef3c9e53b35ec2c80bc406ded414d645e74649d

Verdict:

inconclusive

YARA:

5 match(es)

Tags:

.Net Executable PE (Portable Executable) Win 32 Exe x86

Link:

https://app.malva.re/file/c5bd2612fba05be7959e44fde6092130

Detection:

formbook

Link:

https://mwdb.cert.pl/sample/1077313e39d5064c18f7c544fef3c9e53b35ec2c80bc406ded414d645e74649d/

Threat name:

Win32.Backdoor.FormBook

Status:

Malicious

First seen:

2025-06-25 07:57:01 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

25 of 37 (67.57%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=cb3tcprz2udeyghxyvcp546j4u5tl3bmqc6ea3pnifgwixtumsoq._file

Verdict:

malicious

Label(s):

formbook

unc_loader_037

njrat

3e26ebdfbd46dadcbf46c199970362689fa6ca0e0abb65ec703ca21d08b7269f

njrat

53d30b6b4749ebdfdfebc9a93793ea3863d5c5ef93594e3c215d91b347db2bca

njrat

7d6248b79e83e710efc263a60b855854648088ea196e3460aece7f3fef4dbc8c

njrat

80deb2bfde4e46bfae175693f1456552a8c594e7ef92a7fde81f79512ec5f639

njrat

9b80a8c7bd762d18e429725dc2520d7526b71d89593b49139ea7432170480648

njrat

error

njrat

f42de693aaae005ec4dcf3514621f8573b422f3a3ad1bb1af370acc7c5cba233

njrat

+ 4'965 additional samples on MalwareBazaar

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook campaign:kk14 discovery execution rat spyware stealer trojan

Link:

https://tria.ge/reports/250625-j6b87awjt6/

Behaviour

Scheduled Task/Job: Scheduled Task

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of UnmapMainImage

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Suspicious use of SetThreadContext

Checks computer location settings

Command and Scripting Interpreter: PowerShell

Formbook payload

Formbook

Formbook family

Verdict:

Malicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/13480177-81b4-467c-8d44-2e33e489b9f0

Unpacked files

SH256 hash:

1077313e39d5064c18f7c544fef3c9e53b35ec2c80bc406ded414d645e74649d

MD5 hash:

c5bd2612fba05be7959e44fde6092130

SHA1 hash:

95b0c5e5825af6ed8f47d80d2982a236590a385b

Link:

https://www.unpac.me/results/cdaac2af-ef3e-4a98-ae9e-92b99aa52c07/

SH256 hash:

2b742c3f9f2aa5504fab6a4a12bd1e7a1c58569a6f683ae41daf2f450c89e2b1

MD5 hash:

f5ee67ec178857962707c1216592f129

SHA1 hash:

3ab332a30ceea85eccad8c81951c8fab71a9a190

Detections:

SUSP_OBF_NET_Reactor_Indicators_Jan24

INDICATOR_EXE_Packed_SmartAssembly

Link:

https://www.unpac.me/results/cdaac2af-ef3e-4a98-ae9e-92b99aa52c07/

Parent samples :

1077313e39d5064c18f7c544fef3c9e53b35ec2c80bc406ded414d645e74649d
54a8b4c753e22ebf0f248088c4424393f31417b9d79e0dafe7bf573e6263240a
789bc81b1ed6782ea8295d01a38b4e072c9274d36c359ae936173d78a4b96a2f
ed676622e67bd5910806983cc6a0950c4cf5e32a705ef5b221c55422afca467a
17d70d796220ac7bef6a22366d01799a94ac7d2e71f8d7fc5e591e02763ed04d

SH256 hash:

7cf21ce098ade27e277c5022abe1f3224da06603f40b8086377adb6efcd21174

MD5 hash:

7d3ce4c9249460a2c51d11ae17c39210

SHA1 hash:

4eac60ad590ab014d593e8e606bbace7fbd0fe47

Detections:

SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24

SUSP_OBF_NET_Reactor_Indicators_Jan24

Link:

https://www.unpac.me/results/cdaac2af-ef3e-4a98-ae9e-92b99aa52c07/

SH256 hash:

e220cb9084ebd57c7f1d9bbd8dd7d1125de0a4e2cbc1c275fef0f28d48bc7e86

MD5 hash:

d2e060aa99db9c12af94f5d7e6a85c57

SHA1 hash:

405d460f9b015f7b114b884e65b44a7603aa1af3

Detections:

win_formbook_w0

win_formbook_g0

win_formbook_auto

FormBook

Windows_Trojan_Formbook

Formbook

Link:

https://www.unpac.me/results/cdaac2af-ef3e-4a98-ae9e-92b99aa52c07/

Parent samples :

1077313e39d5064c18f7c544fef3c9e53b35ec2c80bc406ded414d645e74649d
38a4d9f237a7a43c30064b9013215249ba0245abeb39428eadb28d120a7e0087
7f44edb791af09f8161a6b292d6fc82cf3601e56e1996228133081914a660d50
67cf102e88514bfbf457f6dc24925a32fc33324bfa0112d0a74ad888bd0bb13e

Malware family:

FormBook

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/1077313e39d5/report/overview.html

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

Malicious File

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/1077313e39d5064c18f7c544fef3c9e53b35ec2c80bc406ded414d645e74649d

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:	crime_win32_ransom_avaddon_1 Create hunting rule
Author:	@VK_Intel
Description:	Detects Avaddon ransomware
Reference:	https://twitter.com/VK_Intel/status/1300944441390370819

Rule name:	DebuggerCheck__GlobalFlags Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	DebuggerCheck__QueryInfo Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	DebuggerHiding__Active Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	DebuggerHiding__Thread Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	DetectEncryptedVariants Create hunting rule
Author:	Zinyth
Description:	Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded

Rule name:	Detect_PowerShell_Obfuscation Create hunting rule
Author:	daniyyell
Description:	Detects obfuscated PowerShell commands commonly used in malicious scripts.

Rule name:	dgaagas Create hunting rule
Author:	Harshit
Description:	Uses certutil.exe to download a file named test.txt

Rule name:	golang_bin_JCorn_CSC846 Create hunting rule
Author:	Justin Cornwell
Description:	CSC-846 Golang detection ruleset

Rule name:	MD5_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for MD5 constants

Rule name:	NET Create hunting rule
Author:	malware-lu

Rule name:	NETexecutableMicrosoft Create hunting rule
Author:	malware-lu

Rule name:	pe_imphash Create hunting rule

Rule name:	pe_no_import_table Create hunting rule
Description:	Detect pe file that no import table

Rule name:	RIPEMD160_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for RIPEMD-160 constants

Rule name:	SEH__vectored Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	SHA1_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for SHA1 constants

Rule name:	Skystars_Malware_Imphash Create hunting rule
Author:	Skystars LightDefender
Description:	imphash

Rule name:	Sus_Obf_Enc_Spoof_Hide_PE Create hunting rule
Author:	XiAnzheng
Description:	Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

File information

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

Cape

https://www.capesandbox.com/analysis/11066/

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings

ID	Title	Severity
CHECK_AUTHENTICODE	Missing Authenticode	high
CHECK_DLL_CHARACTERISTICS	Missing dll Security Characteristics (HIGH_ENTROPY_VA)	high

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