MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c99591e2e00cc7625f8b8af1eeb04b19b76e5b44f74669fe6b899fbc7b201f6b. 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: 14


Intelligence 14 IOCs YARA 15 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c99591e2e00cc7625f8b8af1eeb04b19b76e5b44f74669fe6b899fbc7b201f6b
SHA3-384 hash: e8b0d32bc8335b1fb44b724c9b18c3f24d64fd93cc6a7417accf53fe1e3ffb0cee3bbd9eef70255b1138e9be518cc0be
SHA1 hash: 884de3971071c0db44197aa72c391434a9203b8f
MD5 hash: 90a096540e813e4737d3027f8339d3a8
humanhash: iowa-oklahoma-timing-video
File name:alphazx.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:579'072 bytes
First seen:2024-01-16 15:37:56 UTC
Last seen:2024-01-16 17:22:54 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:vJv32oUcIETRuZ6U5RHbSjs/zUxgq7SbNSI/Cf:vt3TXtTwZ9RHWXgYSbNbU
Threatray 4'772 similar samples on MalwareBazaar
TLSH T126C4E191B7D2DA2DE8E50735F5F980010F35DAC89485E70F7AFD25287E52B085BAB322
TrID 35.4% (.EXE) Win64 Executable (generic) (10523/12/4)
22.1% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
15.1% (.EXE) Win32 Executable (generic) (4505/5/1)
6.9% (.ICL) Windows Icons Library (generic) (2059/9)
6.8% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon 4c3cf2ca84a4c4e0 (7 x AgentTesla, 2 x Loki, 1 x NanoCore)
Reporter James_inthe_box
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
311
Origin country :
US US
Vendor Threat Intelligence
Detection:
AgentTesla
Create hunting rule
Link:
https://www.capesandbox.com/analysis/471142/
Detection(s):
SecuriteInfo.com.Win32.TrojanX-gen.11512.16114.UNOFFICIAL
Create hunting rule

Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/65a6a2dd94d1aebfb2a32378/reports/c501f839-cf92-4cd4-833d-f02f2ec6ef38/overview
Verdict:
Malicious
Labled as:
Marsilia.Generic
Link:
https://www.hybrid-analysis.com/sample/c99591e2e00cc7625f8b8af1eeb04b19b76e5b44f74669fe6b899fbc7b201f6b
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.
Malware family:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/531e6185-d5dc-47db-9722-7b68024c20fd
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1375476
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
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
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
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 harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected AgentTesla
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/c99591e2e00cc7625f8b8af1eeb04b19b76e5b44f74669fe6b899fbc7b201f6b
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c99591e2e00cc7625f8b8af1eeb04b19b76e5b44f74669fe6b899fbc7b201f6b/
Threat name:
ByteCode-MSIL.Trojan.Whispergate
Create hunting rule
Status:
Malicious
First seen:
2024-01-16 14:33:22 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zgkzdyxabtdwex4lrly65mcldg3w4w2e65dgt7tlrgp3y6zad5vq._file
Verdict:
malicious
Label(s):
agenttesla_v4
Create hunting rule
agenttesla
Create hunting rule
Similar samples:
44e30707c5d0501432e43da59167f8751ebeab3de80d6138a81f46b01a7e6a2e
Formbook
4a8e27dc5721e437f5728054733258a2d92cbe90454a8f2e7c8a98b6aed0daee
Formbook
6d6bc50f49d767016b18192124d9b60d8debda1238077a582c92cb918bf7630c
Formbook
8e1dcf3fda2c83bbf8c6422a8e9b67ec30f80f7c09898a85997b65ef866bdd20
Formbook
c68f557952ede38c087198855960b4ae90544856f8494b228b5f702e235f70f4
Formbook
+ 4'762 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger spyware stealer trojan
Link:
https://tria.ge/reports/240116-s22sqaebbq/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Looks up external IP address via web service
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
AgentTesla
Unpacked files
SH256 hash:
45c7b64a55dca23ee1239649e03a7c361813dbcfc2a0817b0d8e94c907d6ed4b
MD5 hash:
fb1bc19121c4e190d83672bc71b493f0
SHA1 hash:
c3488b969ba578e28ee360be24b6416425a224a0
Link:
https://www.unpac.me/results/61493041-b154-412b-a3ef-1fcecdda4694/
SH256 hash:
a1b4fa2da40183bbcb8cef2e3fd5ac62816eb2a5ca6a312d2d4e0509ce8e8e7d
MD5 hash:
e00036e274f4997497485bb2a2fcb041
SHA1 hash:
80e99e298019403c1fe0b93fd276f13f12889f24
Link:
https://www.unpac.me/results/61493041-b154-412b-a3ef-1fcecdda4694/
SH256 hash:
1d0474d91d7b151a5ee0346c0a6527810fa24f7108c67d92aeb8cf8c7b58ba9b
MD5 hash:
0b72e3be7faba02ae2d74beab3cc5add
SHA1 hash:
7a30a49567db03b317a4f67192069d85b7e1b9c4
Detections:
AgentTesla
Create hunting rule
win_agent_tesla_g2
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
Create hunting rule
Agenttesla_type2
Create hunting rule
INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
Create hunting rule
INDICATOR_EXE_Packed_GEN01
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
Link:
https://www.unpac.me/results/61493041-b154-412b-a3ef-1fcecdda4694/
SH256 hash:
c99591e2e00cc7625f8b8af1eeb04b19b76e5b44f74669fe6b899fbc7b201f6b
MD5 hash:
90a096540e813e4737d3027f8339d3a8
SHA1 hash:
884de3971071c0db44197aa72c391434a9203b8f
Link:
https://www.unpac.me/results/61493041-b154-412b-a3ef-1fcecdda4694/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c99591e2e00c/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
iSpy Keylogger
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/c99591e2e00cc7625f8b8af1eeb04b19b76e5b44f74669fe6b899fbc7b201f6b

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
Create hunting rule
Author:ditekshen
Description:AgentTeslaV3 infostealer payload
Rule name:DebuggerCheck__RemoteAPI
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:INDICATOR_EXE_Packed_GEN01
Create hunting rule
Author:ditekSHen
Description:Detect packed .NET executables. Mostly AgentTeslaV4.
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
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
Create hunting rule
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
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many file transfer clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
Create hunting rule
Author:ditekSHen
Description:Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion
Rule name:INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing Windows vault credential objects. Observed in infostealers
Rule name:malware_Agenttesla_type2
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
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: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.

  
Delivery method
Other
  
URLhaus
https://urlhaus.abuse.ch/url/2749053/
Cape
Cape
https://www.capesandbox.com/analysis/471142/

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