MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f40efd6dfe213fdabdf99ee9fbf9396104a0ca77c7b9bd82fb9687bfaef300c3. 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


AgentTesla


Vendor detections: 9


Intelligence 9 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f40efd6dfe213fdabdf99ee9fbf9396104a0ca77c7b9bd82fb9687bfaef300c3
SHA3-384 hash: 73fdab8ec3eb4f5557f196603a5652863f320d82bddd59a1054f044e21d9578e0f9bef7a70f42e36b5ed7843551962f3
SHA1 hash: 4113dacb3e8b114881f3ee393a6ea7879f0dd822
MD5 hash: b8853601958d7927a7f76d0ef62df0a5
humanhash: friend-jersey-hamper-snake
File name:IMG-SCAN280222.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:41'984 bytes
First seen:2022-03-01 06:56:54 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 384:rg7dN0dyICfgccn5gA/Qe3P1hwDBS/mPcLHC6XoxKXXHrzCH2:E7OyICocsgPBcmiXLuH2
Threatray 18'695 similar samples on MalwareBazaar
TLSH T1E613B596FEEC4571EDD58B7E6CB2CE701662BCFA9830982C24DD7E2B39737404621126
File icon (PE):PE icon
dhash icon d4c4c4d8ccd4f0c4 (63 x Formbook, 23 x AgentTesla, 8 x RemcosRAT)
Reporter lowmal3
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
162
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/245541/
Detection(s):
SecuriteInfo.com.Variant.Strictor.268930.16515.25319.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Launching a process
Сreating synchronization primitives
DNS request
Sending a custom TCP request
Creating a window
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
greyware obfuscated packed shell32.dll update.exe
Link:
https://www.filescan.io/uploads/621dc3c4b94fb38cb42bfc0b/reports/80bf630d-f4bb-4e02-850e-c62bca99b79a/overview
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/4ccabe14-8020-46ac-9e69-a242060a82d0
Result
Threat name:
Nanocore AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/947881
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
.NET source code references suspicious native API functions
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Detected Nanocore Rat
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Sigma detected: NanoCore
Sigma detected: Suspicious Add Scheduled Task From User AppData Temp
Sigma detected: Suspicius Schtasks From Env Var Folder
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AgentTesla
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 580362 Sample: IMG-SCAN280222.exe Startdate: 01/03/2022 Architecture: WINDOWS Score: 100 60 Found malware configuration 2->60 62 Malicious sample detected (through community Yara rule) 2->62 64 Antivirus detection for dropped file 2->64 66 14 other signatures 2->66 8 IMG-SCAN280222.exe 16 7 2->8         started        13 chrome.exe 14 2 2->13         started        15 Rfarechlmbnan22.exe 3 2->15         started        17 3 other processes 2->17 process3 dnsIp4 54 149.154.167.220 TELEGRAMRU United Kingdom 8->54 56 144.76.120.25 HETZNER-ASDE Germany 8->56 58 2 other IPs or domains 8->58 40 C:\Users\user\AppData\Roaming\chrome.exe, PE32 8->40 dropped 42 C:\Users\user\AppData\...\Rfarechlmbnan22.exe, PE32 8->42 dropped 44 C:\Users\user\...\chrome.exe:Zone.Identifier, ASCII 8->44 dropped 46 C:\Users\user\...\IMG-SCAN280222.exe.log, ASCII 8->46 dropped 76 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 8->76 78 Injects a PE file into a foreign processes 8->78 19 Rfarechlmbnan22.exe 1 15 8->19         started        24 IMG-SCAN280222.exe 2 8->24         started        80 Multi AV Scanner detection for dropped file 13->80 82 Machine Learning detection for dropped file 13->82 48 C:\Users\user\...\Rfarechlmbnan22.exe.log, ASCII 15->48 dropped 50 C:\Users\user\AppData\...\dhcpmon.exe.log, ASCII 17->50 dropped file5 signatures6 process7 dnsIp8 52 85.202.169.165 GUDAEV-ASRU Netherlands 19->52 34 C:\Program Files (x86)\...\dhcpmon.exe, PE32 19->34 dropped 36 C:\Users\user\AppData\Roaming\...\run.dat, data 19->36 dropped 38 C:\Users\user\AppData\Local\...\tmp3256.tmp, XML 19->38 dropped 68 Antivirus detection for dropped file 19->68 70 Multi AV Scanner detection for dropped file 19->70 72 Machine Learning detection for dropped file 19->72 74 2 other signatures 19->74 26 schtasks.exe 1 19->26         started        28 schtasks.exe 1 19->28         started        file9 signatures10 process11 process12 30 conhost.exe 26->30         started        32 conhost.exe 28->32         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f40efd6dfe213fdabdf99ee9fbf9396104a0ca77c7b9bd82fb9687bfaef300c3/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-02-28 11:10:32 UTC
File Type:
PE (.Net Exe)
Extracted files:
6
AV detection:
21 of 28 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6qhp23p6ee75vppzt3u7x6jzmeckbstxy6433ax3s2d37lxtadbq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
nanocorerat
Create hunting rule
Similar samples:
462757689ac3c1498cfc5160eb8e160c27668ab5b9a8546af645d522e93e21c0
AgentTesla
6b68f82534d3741e2e20d707a45831fb294a61a2facd1e67b0bd0836886375e8
AgentTesla
7e1c04108960d9e729d34963b1541487bc29b232566a2b0e0abfb420d454645d
AgentTesla
7fe79af3e1b35c1602a0e9f7b7b6f348a01b480b8704dfbc118747eff466ae27
AgentTesla
8e3c255747a5488359596df0c1398d56f206462477aedd67fe38892b745133fd
AgentTesla
c332668f26203de2c05ccb54384fb725095ce6812292f7f90285e37951ef589e
AgentTesla
d900c100ca4cdec50c72b681421a5d727ed17513739c673c84020608b134ff8b
AgentTesla
dae8588b604d0728a1a1ecc77096197a34ed1b22ae7de69a53f39b59e6574ffd
AgentTesla
+ 18'685 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla family:nanocore collection evasion keylogger persistence spyware stealer suricata trojan
Link:
https://tria.ge/reports/220301-hqyxksabgn/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Enumerates physical storage devices
Drops file in Program Files directory
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Adds Run key to start application
Checks whether UAC is enabled
Checks computer location settings
Loads dropped DLL
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Executes dropped EXE
AgentTesla Payload
AgentTesla
NanoCore
suricata: ET MALWARE Possible NanoCore C2 60B
Malware Config
C2 Extraction:
nan21.duckdns.org:2025
Unpacked files
SH256 hash:
f40efd6dfe213fdabdf99ee9fbf9396104a0ca77c7b9bd82fb9687bfaef300c3
MD5 hash:
b8853601958d7927a7f76d0ef62df0a5
SHA1 hash:
4113dacb3e8b114881f3ee393a6ea7879f0dd822
Link:
https://www.unpac.me/results/85b72a9a-636d-462c-822d-a20951a6bbe1/
Malware family:
NanoCore
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/f40efd6dfe21/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/f40efd6dfe213fdabdf99ee9fbf9396104a0ca77c7b9bd82fb9687bfaef300c3

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

File information

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

Malspam

AgentTesla

Executable exe f40efd6dfe213fdabdf99ee9fbf9396104a0ca77c7b9bd82fb9687bfaef300c3

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/245541/

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