MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d81cdc05bbdfb91fc71ba23c937f0d41525948a651cad091d7248c324c78a7fe. 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 4 File information Comments

SHA256 hash: d81cdc05bbdfb91fc71ba23c937f0d41525948a651cad091d7248c324c78a7fe
SHA3-384 hash: 4ad7904a65f003c4e91789e29007d7c2b8093a05658e33239bf3c181bf8928bafd4bdd8c0a57ec7ed63ba707493992f0
SHA1 hash: e277a0a6c13957e0b634fda2b20c8af2e5cc37c2
MD5 hash: 744f49bcc94a89466effc7109d38ca6b
humanhash: three-twelve-enemy-cardinal
File name:Swift Copy.exe
Download: download sample
Signature Formbook
File size:821'760 bytes
First seen:2025-03-04 04:15:52 UTC
Last seen:2025-03-04 18:29:46 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'604 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 24576:Ep5F7AK5F7JSWkeH7vHffCleqT4geTHb5F7:8vEKvFSiH7EeTHbv
Threatray 21 similar samples on MalwareBazaar
TLSH T1890512DCA658C427DA9907351612E2B8377C1EECBE50D2178FDEEDDBF83AA220D18541
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
dhash icon 0023231b6b3b3b20 (4 x SnakeKeylogger, 2 x Formbook, 1 x Loki)
Reporter threatcat_ch
Tags:exe FormBook

Intelligence


File Origin
# of uploads :
3
# of downloads :
433
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Swift Copy.exe
Verdict:
No threats detected
Analysis date:
2025-03-04 04:20:41 UTC
Tags:
n/a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
90.2%
Tags:
virus sage 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 packed packed packer_detected vbnet
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.
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
Found direct / indirect Syscall (likely to bypass EDR)
Injects a PE file into a foreign processes
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:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1628784 Sample: Swift Copy.exe Startdate: 04/03/2025 Architecture: WINDOWS Score: 100 35 www.031235045.xyz 2->35 37 www.seekmeme.xyz 2->37 39 19 other IPs or domains 2->39 47 Suricata IDS alerts for network traffic 2->47 49 Multi AV Scanner detection for submitted file 2->49 51 Yara detected FormBook 2->51 55 3 other signatures 2->55 10 Swift Copy.exe 3 2->10         started        signatures3 53 Performs DNS queries to domains with low reputation 37->53 process4 file5 33 C:\Users\user\AppData\...\Swift Copy.exe.log, ASCII 10->33 dropped 67 Injects a PE file into a foreign processes 10->67 14 Swift Copy.exe 10->14         started        17 Swift Copy.exe 10->17         started        19 Swift Copy.exe 10->19         started        signatures6 process7 signatures8 71 Maps a DLL or memory area into another process 14->71 21 fVluAc4q0shn1kJJCxFoOs.exe 14->21 injected process9 signatures10 57 Found direct / indirect Syscall (likely to bypass EDR) 21->57 24 relog.exe 13 21->24         started        process11 signatures12 59 Tries to steal Mail credentials (via file / registry access) 24->59 61 Tries to harvest and steal browser information (history, passwords, etc) 24->61 63 Modifies the context of a thread in another process (thread injection) 24->63 65 3 other signatures 24->65 27 fVluAc4q0shn1kJJCxFoOs.exe 24->27 injected 31 firefox.exe 24->31         started        process13 dnsIp14 41 031235045.xyz 144.76.229.203, 50084, 50085, 50086 HETZNER-ASDE Germany 27->41 43 www.inverno.lol 216.40.34.41, 50080, 50081, 50082 TUCOWSCA Canada 27->43 45 8 other IPs or domains 27->45 69 Found direct / indirect Syscall (likely to bypass EDR) 27->69 signatures15
Threat name:
Win32.Trojan.Remcos
Status:
Malicious
First seen:
2025-03-04 04:16:16 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
16 of 24 (66.67%)
Threat level:
  5/5
Result
Malware family:
n/a
Score:
  5/10
Tags:
discovery
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
d81cdc05bbdfb91fc71ba23c937f0d41525948a651cad091d7248c324c78a7fe
MD5 hash:
744f49bcc94a89466effc7109d38ca6b
SHA1 hash:
e277a0a6c13957e0b634fda2b20c8af2e5cc37c2
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:NET
Author:malware-lu
Rule name:pe_imphash
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
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 d81cdc05bbdfb91fc71ba23c937f0d41525948a651cad091d7248c324c78a7fe

(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