MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 277b6737f6781a4be2bec82a031a0b977a32ef8a4811bb7b4c3727219dc4958a. 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: 15


Intelligence 15 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 277b6737f6781a4be2bec82a031a0b977a32ef8a4811bb7b4c3727219dc4958a
SHA3-384 hash: cb6ef029a9ca50c2ba6fe5e50f36551a23c085f5725bf8715f53d47684ee721e742c29da0d5ba9482bb61c8c39a1a8a3
SHA1 hash: 9d03d83cdd290771f7d50478d672d2fe8813ebf3
MD5 hash: 5e0c64cdd8e5cd40615236c5f85e9769
humanhash: stairway-eight-purple-eight
File name:Arrival Notice.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:821'248 bytes
First seen:2025-02-28 15:43:57 UTC
Last seen:2025-03-03 14:27:11 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:7jpMysBMz8tEUkBiidu4GfsxrP0nQAPnxmr8HxJk1agOs:fpM31t5gtb0sBg2M3r
Threatray 15 similar samples on MalwareBazaar
TLSH T10E05122C7F61AEB6C62C1F33C483402862F78946D613FBAF5EDC1CE61D26E45C54A5A2
TrID 69.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.0% (.EXE) Win64 Executable (generic) (10522/11/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.2% (.EXE) Win32 Executable (generic) (4504/4/1)
1.9% (.EXE) Win16/32 Executable Delphi generic (2072/23)
Magika pebin
Reporter threatcat_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
4
# of downloads :
456
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Arrival Notice.exe
Verdict:
No threats detected
Analysis date:
2025-02-28 15:44:22 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/d4bc0a1b-6476-4221-b8fc-2a65b11666c0

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.RATX-gen.12071.13930.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
90.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67c1dabe4e50050b2e6f0a94
Tags:
virus micro msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Сreating synchronization primitives
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated obfuscated obfuscated packed packed packer_detected vbnet
Link:
https://www.filescan.io/uploads/67c1d9d43c5f644bd93cb207/reports/04c4b277-7172-4042-82ae-5b095d15fb8a/overview
Verdict:
Malicious
Labled as:
HackTool[Obfuscator]/MSIL.DeepSea
Link:
https://www.hybrid-analysis.com/sample/277b6737f6781a4be2bec82a031a0b977a32ef8a4811bb7b4c3727219dc4958a
Result
Verdict:
SUSPICIOUS
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:
KeyBase
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/09e271b4-14ca-41ee-b9ad-4c49d5d82cfc
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1626592
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Antivirus / Scanner detection for submitted sample
Found direct / indirect Syscall (likely to bypass EDR)
Initial sample is a PE file and has a suspicious name
Joe Sandbox ML detected suspicious sample
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1626592 Sample: Arrival Notice.exe Startdate: 28/02/2025 Architecture: WINDOWS Score: 100 30 www.031235045.xyz 2->30 32 www.seekmeme.xyz 2->32 34 19 other IPs or domains 2->34 44 Suricata IDS alerts for network traffic 2->44 46 Antivirus / Scanner detection for submitted sample 2->46 48 Multi AV Scanner detection for submitted file 2->48 52 6 other signatures 2->52 10 Arrival Notice.exe 3 2->10         started        signatures3 50 Performs DNS queries to domains with low reputation 32->50 process4 file5 28 C:\Users\user\...\Arrival Notice.exe.log, ASCII 10->28 dropped 13 Arrival Notice.exe 10->13         started        process6 signatures7 64 Maps a DLL or memory area into another process 13->64 16 73LGxB4s.exe 13->16 injected process8 signatures9 42 Found direct / indirect Syscall (likely to bypass EDR) 16->42 19 relog.exe 13 16->19         started        process10 signatures11 54 Tries to steal Mail credentials (via file / registry access) 19->54 56 Tries to harvest and steal browser information (history, passwords, etc) 19->56 58 Modifies the context of a thread in another process (thread injection) 19->58 60 3 other signatures 19->60 22 73LGxB4s.exe 19->22 injected 26 firefox.exe 19->26         started        process12 dnsIp13 36 primepath.net 23.29.115.2, 50069, 50070, 50071 INCERO-HVVCUS United States 22->36 38 031235045.xyz 144.76.229.203, 50086, 50087, 50088 HETZNER-ASDE Germany 22->38 40 7 other IPs or domains 22->40 62 Found direct / indirect Syscall (likely to bypass EDR) 22->62 signatures14
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/277b6737f6781a4be2bec82a031a0b977a32ef8a4811bb7b4c3727219dc4958a
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/277b6737f6781a4be2bec82a031a0b977a32ef8a4811bb7b4c3727219dc4958a/
Threat name:
Win32.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2025-02-28 08:23:26 UTC
File Type:
PE (.Net Exe)
AV detection:
26 of 38 (68.42%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=e55won7wpanexyv6zavaggqls55df34kjai3w62mg4tsdhoeswfa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
unknown_loader_037
Create hunting rule
Similar samples:
277b6737f6781a4be2bec82a031a0b977a32ef8a4811bb7b4c3727219dc4958a
Formbook
287de19d6a0d64d959d34892c6992c6417aa4b4ebe6b3aeced33522a3d15638a
Formbook
724bfa1f9bf8b08699e2cb9a8c6fc0a13da0d863ece815e6b9664aab67c3b61e
Formbook
79aa896551cd2738e5ff969ebf5e548fb5562f0f9238cdd6fe1f05a5fd89d4a7
Formbook
ca275788292983ccf5bee843aac527281ccb353aa802dcd4cb02472de9c6ce33
Formbook
d1bcf8347e8ae64035086a221d42e0460b49c52d47fdb3dbbdaf94513e9b3271
Formbook
error
Formbook
+ 5 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  5/10
Tags:
discovery
Link:
https://tria.ge/reports/250228-s6j4ga1sfv/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/04f86c00-3d2f-4a0e-a40a-457b6f63cd79
Unpacked files
SH256 hash:
277b6737f6781a4be2bec82a031a0b977a32ef8a4811bb7b4c3727219dc4958a
MD5 hash:
5e0c64cdd8e5cd40615236c5f85e9769
SHA1 hash:
9d03d83cdd290771f7d50478d672d2fe8813ebf3
Link:
https://www.unpac.me/results/2d4a4828-296c-40b5-93a6-0de10e33d551/
SH256 hash:
16b39ba70f3af2eaeb841586ab5a0046d4c6fdb33deafa677ca550d22cd44216
MD5 hash:
ec3e356d68820ace93711f8caaa1c584
SHA1 hash:
81fbb29ed5e0175d298ce766832d9558db228ffe
Link:
https://www.unpac.me/results/2d4a4828-296c-40b5-93a6-0de10e33d551/
SH256 hash:
21a3f1bb411afd63f5158f305829a00787479e71d427d0fd7200f04d017bb093
MD5 hash:
5763fd781942119720f858944ddc11f1
SHA1 hash:
9321a0ca0e8801ca2a72f58ac3095216c533191c
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/2d4a4828-296c-40b5-93a6-0de10e33d551/
SH256 hash:
2a110a936d9d8d833066ae4a13cc6b6a6f136db8b385d76b29d8d7cafdab1449
MD5 hash:
23d9a31d9dae9b93499e95d6cbea948a
SHA1 hash:
ac2f2eae497bc23a523fcfc8a8faa8c225834872
Link:
https://www.unpac.me/results/2d4a4828-296c-40b5-93a6-0de10e33d551/
SH256 hash:
f627e1e6de21f6476e606b777485cdae3e48125f4c35a56a75924fafb60fd5de
MD5 hash:
393db4fb18e084e3d9a58cec3b4d1423
SHA1 hash:
28ce2a5a93148b1e8d30f0707fc0c6677dd29d2b
Detections:
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/2d4a4828-296c-40b5-93a6-0de10e33d551/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/277b6737f678/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/277b6737f6781a4be2bec82a031a0b977a32ef8a4811bb7b4c3727219dc4958a

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: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
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.

Malspam

Formbook

Executable exe 277b6737f6781a4be2bec82a031a0b977a32ef8a4811bb7b4c3727219dc4958a

(this sample)

  
Delivery method
Distributed via e-mail attachment

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
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (GUARD_CF)high

Comments