MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 28c758c9863ef77da34aa104fbb05b0b82547817efe4dbda0349891237dea3d0. 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 3 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 28c758c9863ef77da34aa104fbb05b0b82547817efe4dbda0349891237dea3d0
SHA3-384 hash: 563f469701c6615c98e33fb500674ebc1a8d9cca3b41304af54fb0e08896a9f9fd6291b1663da778f73a2ab98b659a09
SHA1 hash: 324974e51c208fdf297d01a7819aef7b5e369c2a
MD5 hash: e48f2c7ed90e58903ded1ff4547c1551
humanhash: four-grey-princess-football
File name:e48f2c7ed90e58903ded1ff4547c1551
Download: download sample
Signature Formbook
Create hunting rule
File size:898'048 bytes
First seen:2022-06-29 08:32:36 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'658 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:hAG69xenaHFd/gpcSZXsxs9EA3MAElmdByBrvbaDt1n:h5naHFd/gaCsqyAcvlmd0B+bn
TLSH T10315BE1567EC9ED7C87B037EE0612A096375F211A34BE74BA398B4F62DA2394CD41387
TrID 61.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.0% (.SCR) Windows screen saver (13101/52/3)
8.8% (.EXE) Win64 Executable (generic) (10523/12/4)
5.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.2% (.EXE) Win16 NE executable (generic) (5038/12/1)
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
220
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/284178/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Сreating synchronization primitives
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a process from a recently created file
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
Creating a file
Launching cmd.exe command interpreter
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
greyware packed
Link:
https://www.filescan.io/uploads/62bc0e47cd5fc77b1d527557/reports/2e7aac90-5643-4ca5-8061-279bab042c60/overview
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:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/12536571-11a8-4caf-9b6e-1491c030724b
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1021732
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Adds a directory exclusion to Windows Defender
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Machine Learning detection for dropped file
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 dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
System process connects to network (likely due to code injection or exploit)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected FormBook
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 654228 Sample: whtQQHZ4gL Startdate: 29/06/2022 Architecture: WINDOWS Score: 100 46 Multi AV Scanner detection for domain / URL 2->46 48 Malicious sample detected (through community Yara rule) 2->48 50 Antivirus detection for URL or domain 2->50 52 12 other signatures 2->52 10 whtQQHZ4gL.exe 7 2->10         started        process3 file4 36 C:\Users\user\AppData\Roaming\ahlccoH.exe, PE32 10->36 dropped 38 C:\Users\user\...\ahlccoH.exe:Zone.Identifier, ASCII 10->38 dropped 40 C:\Users\user\AppData\Local\...\tmp70B9.tmp, XML 10->40 dropped 42 C:\Users\user\AppData\...\whtQQHZ4gL.exe.log, ASCII 10->42 dropped 56 Uses schtasks.exe or at.exe to add and modify task schedules 10->56 58 Adds a directory exclusion to Windows Defender 10->58 14 RegSvcs.exe 10->14         started        17 powershell.exe 25 10->17         started        19 schtasks.exe 1 10->19         started        signatures5 process6 signatures7 66 Modifies the context of a thread in another process (thread injection) 14->66 68 Maps a DLL or memory area into another process 14->68 70 Sample uses process hollowing technique 14->70 72 2 other signatures 14->72 21 explorer.exe 14->21 injected 25 conhost.exe 17->25         started        27 conhost.exe 19->27         started        process8 dnsIp9 44 www.littlelina.com 81.17.29.149, 49765, 80 PLI-ASCH Switzerland 21->44 54 System process connects to network (likely due to code injection or exploit) 21->54 29 chkdsk.exe 21->29         started        signatures10 process11 signatures12 60 Modifies the context of a thread in another process (thread injection) 29->60 62 Maps a DLL or memory area into another process 29->62 64 Tries to detect virtualization through RDTSC time measurements 29->64 32 cmd.exe 1 29->32         started        process13 process14 34 conhost.exe 32->34         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/28c758c9863ef77da34aa104fbb05b0b82547817efe4dbda0349891237dea3d0/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-06-28 15:24:55 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
21 of 26 (80.77%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=fddvrsmgh33x3i2kuecpxmc3bobfi6ax57snxwqdjgeren66upia._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:rx29 rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220629-kfxb4sgbdl/
Behaviour
Creates scheduled task(s)
Enumerates system info in registry
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
9c56af5cbade13e747e61b5a7994d6d0e488c401f4986074509640fa4df607a5
MD5 hash:
acae5c96cec5f1b18fb34b9e370b3a10
SHA1 hash:
19df423a0681e28a8e6859aa8b241d9ece411ef7
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
FormBook
Create hunting rule
Link:
https://www.unpac.me/results/c6566658-d064-4a3a-b010-7e7211c95168/
Parent samples :
39da5fd546b1ef1e8b72e56a95ac89f0e6bded69816ab72b96dd54c5e2c12517
28c758c9863ef77da34aa104fbb05b0b82547817efe4dbda0349891237dea3d0
6043c59b851684edcaac6b0586f079cde35cacfc717a0c5b25dec5ae0f568764
SH256 hash:
5723367d7cd48b98eb468740ee30085b10bfa3d6a9774e36936e6026aa58af05
MD5 hash:
ccb0686ddfcd782f6adaab81f29a9348
SHA1 hash:
fb2138780442d54c9b367ae901c7150c1d21f087
Link:
https://www.unpac.me/results/c6566658-d064-4a3a-b010-7e7211c95168/
SH256 hash:
65c33483dbb37cc8d87c59e768848b96eb7699d094bd426c75edc4c7032d79bf
MD5 hash:
6e802fc3b298c583521eb05766d574d2
SHA1 hash:
da4d9ef28fdc36ee550ef33a21d41e16b6a65b08
Link:
https://www.unpac.me/results/c6566658-d064-4a3a-b010-7e7211c95168/
SH256 hash:
0cb6aef1fa57d11408e47ae071485ef8f48c2982997b8d74b47a4151d85b978c
MD5 hash:
843aa6edf83bff7b61c6a5369ef41e95
SHA1 hash:
d1bfeec8eaac9a1dacf2f7062ce964d8e7d77085
Link:
https://www.unpac.me/results/c6566658-d064-4a3a-b010-7e7211c95168/
SH256 hash:
cbfd61a4199fe29be47034df57d45c9c09f99ef7ee8ae16c99acccfec6ed4a53
MD5 hash:
f897d6405d8861b230c4c0051300422e
SHA1 hash:
910c44b947587400c8bfdb5da24971fd249fd421
Link:
https://www.unpac.me/results/c6566658-d064-4a3a-b010-7e7211c95168/
SH256 hash:
28c758c9863ef77da34aa104fbb05b0b82547817efe4dbda0349891237dea3d0
MD5 hash:
e48f2c7ed90e58903ded1ff4547c1551
SHA1 hash:
324974e51c208fdf297d01a7819aef7b5e369c2a
Link:
https://www.unpac.me/results/c6566658-d064-4a3a-b010-7e7211c95168/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/28c758c9863e/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/28c758c9863ef77da34aa104fbb05b0b82547817efe4dbda0349891237dea3d0

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:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
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 28c758c9863ef77da34aa104fbb05b0b82547817efe4dbda0349891237dea3d0

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2252339/
Cape
Cape
https://www.capesandbox.com/analysis/284178/

Comments


Avatar
zbet commented on 2022-06-29 08:32:37 UTC

url : hxxp://104.168.33.66/ali/car.exe