MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 639d5d04a0ea4de3360bd342b8b821ad7f317d4520dd17da071fb24d316d13d0. 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: 19


Intelligence 19 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 639d5d04a0ea4de3360bd342b8b821ad7f317d4520dd17da071fb24d316d13d0
SHA3-384 hash: 3ac3a594b5b0f9a11ea94429a970f142e5bb89eaca6bd69baf055dc191aeba7b1e519413b8b261626186948c407abc9f
SHA1 hash: d7462678f68b3460cc39c8338952dccdc8fc18a6
MD5 hash: 3169cbecdffcbc87e7cf8d7c90b2b706
humanhash: fifteen-cardinal-fish-leopard
File name:3169cbecdffcbc87e7cf8d7c90b2b706.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:590'848 bytes
First seen:2023-11-26 16:53:57 UTC
Last seen:2023-11-26 18:38:06 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:ZxPOXj9Rygkksj+oeAcvKpLKpLthOSlyVrwK4ENz4K:ZdOz+Z+FAwKwLEVMEN
TLSH T1E3C4231B35AF97B7C0DC03F90DE7869243B56A97195FEF6C194D819A8C0BB20E67204B
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 00e4f8d2f2d0c010 (7 x Formbook, 5 x AgentTesla, 2 x SnakeKeylogger)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
284
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
kelihos
Create hunting rule
ID:
1
File name:
New Text Document.bin.zip
Verdict:
Malicious activity
Analysis date:
2023-11-25 12:08:37 UTC
Tags:
opendir loader kelihos trojan rat njrat bladabindi stealer stealc xworm netwire formbook xloader amadey botnet arechclient2 backdoor evasion systembc proxy lumma redline lokibot socks5systemz metasploit gcleaner spyware agenttesla asyncrat raccoon recordbreaker
Link:
https://app.any.run/tasks/945da6b6-5486-402e-ab16-eea79bb6a974

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/460366/
Detection(s):
SecuriteInfo.com.Trojan.Inject4.59820.17576.1631.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/65637831380413dc0c214082/reports/48611465-ba32-4b96-a4e6-b0ab496b404b/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/639d5d04a0ea4de3360bd342b8b821ad7f317d4520dd17da071fb24d316d13d0
Result
Verdict:
MALICIOUS
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/5e5d2530-3c00-49d5-89a5-e915f172199a
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1348044
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1348044 Sample: yUpUHVpS0w.exe Startdate: 26/11/2023 Architecture: WINDOWS Score: 100 30 www.tailboost.xyz 2->30 32 www.prepsnation.com 2->32 34 16 other IPs or domains 2->34 42 Snort IDS alert for network traffic 2->42 44 Multi AV Scanner detection for domain / URL 2->44 46 Found malware configuration 2->46 50 10 other signatures 2->50 11 yUpUHVpS0w.exe 3 2->11         started        signatures3 48 Performs DNS queries to domains with low reputation 30->48 process4 signatures5 60 Tries to detect virtualization through RDTSC time measurements 11->60 14 yUpUHVpS0w.exe 11->14         started        17 yUpUHVpS0w.exe 11->17         started        process6 signatures7 62 Modifies the context of a thread in another process (thread injection) 14->62 64 Maps a DLL or memory area into another process 14->64 66 Sample uses process hollowing technique 14->66 68 Queues an APC in another process (thread injection) 14->68 19 explorer.exe 7 1 14->19 injected process8 dnsIp9 36 www.tailboost.xyz 67.223.117.3, 49721, 80 VIMRO-AS15189US United States 19->36 38 maquinazero.store 162.240.81.18, 49739, 80 UNIFIEDLAYER-AS-1US United States 19->38 40 8 other IPs or domains 19->40 52 System process connects to network (likely due to code injection or exploit) 19->52 23 cmmon32.exe 19->23         started        signatures10 process11 signatures12 54 Modifies the context of a thread in another process (thread injection) 23->54 56 Maps a DLL or memory area into another process 23->56 58 Tries to detect virtualization through RDTSC time measurements 23->58 26 cmd.exe 1 23->26         started        process13 process14 28 conhost.exe 26->28         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/639d5d04a0ea4de3360bd342b8b821ad7f317d4520dd17da071fb24d316d13d0
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/639d5d04a0ea4de3360bd342b8b821ad7f317d4520dd17da071fb24d316d13d0/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2023-11-24 06:34:24 UTC
File Type:
PE (.Net Exe)
Extracted files:
6
AV detection:
20 of 37 (54.05%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=moov2bfa5jg6gnql2nblrobbvv7tc7kfedorpwqhd6ze2mlncpia._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:o6g2 rat spyware stealer trojan
Link:
https://tria.ge/reports/231126-vejpqsae84/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Formbook payload
Formbook
Unpacked files
SH256 hash:
b6b4c1bf2557e39c7f27e701d918cfed75ef7e91ec20db9231d7a9a5b1334c07
MD5 hash:
e5b3ff28403f788b6edd987572b27042
SHA1 hash:
6baeb28f9767310d00c497d1b7abc28662066303
Detections:
FormBook
Create hunting rule
win_formbook_w0
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Formbook
Create hunting rule
Link:
https://www.unpac.me/results/2ef222a2-9ded-428a-af65-002c41dfdbbd/
Parent samples :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 hash:
d01f3dea3851602ba5a0586c60430d286adf6fcc7e17aab080601a66630606e5
MD5 hash:
579197d4f760148a9482d1ebde113259
SHA1 hash:
cf6924eb360c7e5a117323bebcb6ee02d2aec86d
Link:
https://www.unpac.me/results/2ef222a2-9ded-428a-af65-002c41dfdbbd/
SH256 hash:
2ba76f49093f1707446be3f23b06805b232c3e939f5a16bb6b0da5ee70feb616
MD5 hash:
6ea6695ed9ac9875700b0581e4387e25
SHA1 hash:
bc3ccf7493945e00e9cf12fc54886c527a89b0aa
Link:
https://www.unpac.me/results/2ef222a2-9ded-428a-af65-002c41dfdbbd/
SH256 hash:
b32f64139e9cfc3afa129ec4bd0adced5c90f5bb1d3cde1d1a6415165b875370
MD5 hash:
9385019216c64b66fb1e4ceae3ca9486
SHA1 hash:
ad74faf0fc06b34ff4ddd1f44b8cdea500c8fef6
Link:
https://www.unpac.me/results/2ef222a2-9ded-428a-af65-002c41dfdbbd/
SH256 hash:
639d5d04a0ea4de3360bd342b8b821ad7f317d4520dd17da071fb24d316d13d0
MD5 hash:
3169cbecdffcbc87e7cf8d7c90b2b706
SHA1 hash:
d7462678f68b3460cc39c8338952dccdc8fc18a6
Link:
https://www.unpac.me/results/2ef222a2-9ded-428a-af65-002c41dfdbbd/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/639d5d04a0ea/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/639d5d04a0ea4de3360bd342b8b821ad7f317d4520dd17da071fb24d316d13d0

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: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.

Web download

Formbook

Executable exe 639d5d04a0ea4de3360bd342b8b821ad7f317d4520dd17da071fb24d316d13d0

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2729061/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/460366/

Comments