MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 55f9139909a989086c9b4b4610cfa5787cf12b5edaea8ac2cb6de7763300bfa4. 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



Formbook


Vendor detections: 16


Intelligence 16 IOCs YARA 16 File information Comments

SHA256 hash: 55f9139909a989086c9b4b4610cfa5787cf12b5edaea8ac2cb6de7763300bfa4
SHA3-384 hash: 9ea09a20a15e1192d88a3269a5dde9f4c005a2de99ceab5023922e14f7d777462f64fb44514df5170372207face50aa4
SHA1 hash: 9f1ee2805ba6aa4cc126c3d7bd2538df39e2101a
MD5 hash: 30c4d04bd8dc96fb1dbe629ccb4aaec1
humanhash: april-wisconsin-magnesium-carbon
File name:DHL_AWB#6078538091.exe
Download: download sample
Signature Formbook
File size:751'104 bytes
First seen:2024-01-31 11:07:03 UTC
Last seen:2024-01-31 12:50:17 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:dO69sh9SCF1OkuHGpg7wybo04fjIIxMoy0V/BpDt4MB2WEFwG07mF9:86sh9ZZqGiaEnlmH+MgWljG
Threatray 5'197 similar samples on MalwareBazaar
TLSH T1A0F412043BA40663EA6D4A74CD7141DC5BB6FE1A3E81D78B2DC4709D16F3BEA9295303
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):PE icon
dhash icon 71e8d4d469e8cc68 (19 x AgentTesla, 5 x Formbook, 3 x SnakeKeylogger)
Reporter abuse_ch
Tags:DHL exe FormBook

Intelligence


File Origin
# of uploads :
2
# of downloads :
268
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
agenttesla
ID:
1
File name:
55f9139909a989086c9b4b4610cfa5787cf12b5edaea8ac2cb6de7763300bfa4.exe
Verdict:
Malicious activity
Analysis date:
2024-01-31 12:11:11 UTC
Tags:
evasion agenttesla stealer

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
masquerade packed
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.
Result
Threat name:
AgentTesla, PureLog Stealer
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Check if machine is in data center or colocation facility
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Contains functionality to log keystrokes (.Net Source)
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 network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Scheduled temp file as task from temp location
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Generic Downloader
Yara detected PureLog Stealer
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1383999 Sample: DHL_AWB#6078538091.exe Startdate: 31/01/2024 Architecture: WINDOWS Score: 100 61 us2.smtp.mailhostbox.com 2->61 63 ip-api.com 2->63 69 Found malware configuration 2->69 71 Malicious sample detected (through community Yara rule) 2->71 73 Antivirus / Scanner detection for submitted sample 2->73 75 12 other signatures 2->75 8 DHL_AWB#6078538091.exe 7 2->8         started        12 ZUHFqcY.exe 2->12         started        14 lujHhTpY.exe 5 2->14         started        16 ZUHFqcY.exe 2->16         started        signatures3 process4 file5 57 C:\Users\user\AppData\Roaming\lujHhTpY.exe, PE32 8->57 dropped 59 C:\Users\user\AppData\Local\...\tmp9993.tmp, XML 8->59 dropped 83 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 8->83 85 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 8->85 87 Uses schtasks.exe or at.exe to add and modify task schedules 8->87 97 2 other signatures 8->97 18 DHL_AWB#6078538091.exe 16 5 8->18         started        23 powershell.exe 23 8->23         started        35 2 other processes 8->35 89 Antivirus detection for dropped file 12->89 91 Multi AV Scanner detection for dropped file 12->91 93 Machine Learning detection for dropped file 12->93 25 ZUHFqcY.exe 12->25         started        37 2 other processes 12->37 27 lujHhTpY.exe 14->27         started        29 schtasks.exe 14->29         started        95 Injects a PE file into a foreign processes 16->95 31 ZUHFqcY.exe 16->31         started        33 schtasks.exe 16->33         started        signatures6 process7 dnsIp8 65 ip-api.com 208.95.112.1, 49708, 49712, 49714 TUT-ASUS United States 18->65 67 us2.smtp.mailhostbox.com 208.91.199.223, 49709, 49713, 49716 PUBLIC-DOMAIN-REGISTRYUS United States 18->67 53 C:\Users\user\AppData\Roaming\...\ZUHFqcY.exe, PE32 18->53 dropped 55 C:\Users\user\...\ZUHFqcY.exe:Zone.Identifier, ASCII 18->55 dropped 77 Tries to steal Mail credentials (via file / registry access) 18->77 79 Hides that the sample has been downloaded from the Internet (zone.identifier) 18->79 39 conhost.exe 23->39         started        41 WmiPrvSE.exe 23->41         started        43 conhost.exe 29->43         started        81 Tries to harvest and steal browser information (history, passwords, etc) 31->81 45 conhost.exe 33->45         started        47 conhost.exe 35->47         started        49 conhost.exe 35->49         started        51 conhost.exe 37->51         started        file9 signatures10 process11
Threat name:
ByteCode-MSIL.Trojan.SnakeKeyLogger
Status:
Malicious
First seen:
2024-01-30 04:30:35 UTC
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Result
Malware family:
agenttesla
Score:
  10/10
Tags:
family:agenttesla keylogger persistence spyware stealer trojan
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Looks up external IP address via web service
Checks computer location settings
Reads user/profile data of local email clients
Reads user/profile data of web browsers
AgentTesla
Unpacked files
SH256 hash:
0b8f2545f867b26a97930302058ccb1234c713321097098d9199aca224f1d3ee
MD5 hash:
235722e4f255ecdc0b3f8c9dd26f33df
SHA1 hash:
cce1fdf9cc278f6f105eafd7029f22f2f85b74e7
Detections:
AgentTesla win_agent_tesla_g2 INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients Agenttesla_type2 INDICATOR_SUSPICIOUS_Binary_References_Browsers INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL INDICATOR_EXE_Packed_GEN01 INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
SH256 hash:
a895615d1a578509e508525b5eabb30787f994859db6a10dfca199a847099248
MD5 hash:
c16571e66609ef65766c670fd1c89f75
SHA1 hash:
576133eed4e05b89b2e8ae7e7a215d39b52623ac
SH256 hash:
72c21794e7dd166415d3a1aa9c5a8ac051763d76b7d50e2b51550b1b17be7396
MD5 hash:
5efa16816bcc0f5ad4c5c24450257355
SHA1 hash:
37fa1da4c42730231d157fd92818d2503b56a8c2
SH256 hash:
518c5755b6d44a4e6dc2dfe808c2aeec2f7d4a7a076802b4cb2f5f79b4730181
MD5 hash:
9465383c0c2e2826017f5aa38e929225
SHA1 hash:
27ef0d9cb467db93040705d8e64789ee7c027610
SH256 hash:
55f9139909a989086c9b4b4610cfa5787cf12b5edaea8ac2cb6de7763300bfa4
MD5 hash:
30c4d04bd8dc96fb1dbe629ccb4aaec1
SHA1 hash:
9f1ee2805ba6aa4cc126c3d7bd2538df39e2101a
Please note that we are no longer able to provide a coverage score for Virus Total.

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:AgentTeslaV3
Author:ditekshen
Description:AgentTeslaV3 infostealer payload
Rule name:DebuggerCheck__RemoteAPI
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:INDICATOR_EXE_Packed_GEN01
Author:ditekSHen
Description:Detect packed .NET executables. Mostly AgentTeslaV4.
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
Author:ditekSHen
Description:Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Author:ditekSHen
Description:Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
Author:ditekSHen
Description:Detects executables referencing many file transfer clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
Author:ditekSHen
Description:Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion
Rule name:INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
Author:ditekSHen
Description:Detects executables referencing Windows vault credential objects. Observed in infostealers
Rule name:malware_Agenttesla_type2
Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:Multifamily_RAT_Detection
Author:Lucas Acha (http://www.lukeacha.com)
Description:Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables
Rule name:NET
Author:malware-lu
Rule name:NETexecutableMicrosoft
Author:malware-lu
Rule name:pe_imphash
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash
Rule name:Windows_Trojan_AgentTesla_ebf431a8
Author:Elastic Security

File information


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

Malspam

Formbook

Executable exe 55f9139909a989086c9b4b4610cfa5787cf12b5edaea8ac2cb6de7763300bfa4

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments