MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 77c54b077789c0f6523b29fec23823227ffeca21d82c627e63f92d95b59e1905. 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 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 77c54b077789c0f6523b29fec23823227ffeca21d82c627e63f92d95b59e1905
SHA3-384 hash: 0aa68b4cfb4547f95f3365487662b75fcc795f3c4cee730a023bcc0c76866c95b880607bde572fa9518103488cf57976
SHA1 hash: 102ad51672793c60082bbd5abef78fb82d063925
MD5 hash: 1297f9daae9378926474c3302f54e030
humanhash: early-finch-mango-beryllium
File name:inlawr544434.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:873'472 bytes
First seen:2022-06-15 16:03:09 UTC
Last seen:2022-06-16 07:35:44 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:S8EfT5049DmjbFh25yJvLTbs1OF6H22qla5w/yXbx9PkWt8KHfVUXPNGSUZAlNkc:8L5RMj0wLTy/H0MW/IbxYG9EQQkrJu
TLSH T124059D8A43486ECBDCE68B39A6F31E54E252D670550F83074A50F93B432B7CAFF5158A
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
423
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/280233/
Detection(s):
Win.Trojan.EmbeddedDotNetBinary-9940868-0
Create hunting rule

Win.Trojan.EmbeddedReversedDLL-9940922-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Launching a process
Sending a custom TCP request
Creating a file
Сreating synchronization primitives
Launching cmd.exe command interpreter
Searching for synchronization primitives
Setting browser functions hooks
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
fareit packed wacatac
Link:
https://www.filescan.io/uploads/62aa02f5916056ae17128a5f/reports/7165a6d6-432f-4f14-8c7c-65b0f6dbcd3d/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/1259a051-3019-4a2a-9f00-0dbd8b323a99
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1013828
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Injects a PE file into a foreign processes
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)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected Costura Assembly Loader
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 646324 Sample: inlawr544434.exe Startdate: 15/06/2022 Architecture: WINDOWS Score: 100 40 www.boxberry-my.com 2->40 42 Multi AV Scanner detection for domain / URL 2->42 44 Malicious sample detected (through community Yara rule) 2->44 46 Antivirus detection for URL or domain 2->46 48 6 other signatures 2->48 10 inlawr544434.exe 1 2->10         started        signatures3 process4 file5 38 C:\Users\user\...\inlawr544434.exe.log, ASCII 10->38 dropped 56 Writes to foreign memory regions 10->56 58 Injects a PE file into a foreign processes 10->58 14 InstallUtil.exe 10->14         started        17 InstallUtil.exe 10->17         started        19 powershell.exe 15 10->19         started        signatures6 process7 signatures8 60 Modifies the context of a thread in another process (thread injection) 14->60 62 Maps a DLL or memory area into another process 14->62 64 Sample uses process hollowing technique 14->64 66 Queues an APC in another process (thread injection) 14->66 21 cmstp.exe 14->21         started        24 explorer.exe 14->24 injected 68 Tries to detect virtualization through RDTSC time measurements 17->68 26 conhost.exe 19->26         started        process9 signatures10 50 Modifies the context of a thread in another process (thread injection) 21->50 52 Maps a DLL or memory area into another process 21->52 54 Tries to detect virtualization through RDTSC time measurements 21->54 28 cmd.exe 1 21->28         started        30 explorer.exe 3 152 21->30         started        32 autoconv.exe 24->32         started        34 autochk.exe 24->34         started        process11 process12 36 conhost.exe 28->36         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/77c54b077789c0f6523b29fec23823227ffeca21d82c627e63f92d95b59e1905/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-06-15 12:10:48 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
23 of 26 (88.46%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=o7cuwb3xrhapmur3fh7meobdej775srb3awge7td7ewzlnm6decq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:sn31 rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220615-thxv4ahbf3/
Behaviour
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
Suspicious use of SetThreadContext
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
b02dc5b7e58275ad45eb4df02325f5fca9204fa17b52d33bdbc50ffdc6d46e3c
MD5 hash:
6172516b2cf7a0ce0ee0e31f64161e13
SHA1 hash:
877e795a74b2bc6ceffcd6b141e0acc97beb21d7
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/45d0f470-cdbf-4cd2-b68f-d1c75812a6cc/
Parent samples :
dc44140377b017e013ca665c49ebacd386d4a4ca19329e77d9dfbb86010e66a5
2537720d5a68fae9bd2bd01925102deb25af75b86fbdc295f166efc97e636cfe
77c54b077789c0f6523b29fec23823227ffeca21d82c627e63f92d95b59e1905
35edcaa0f180ef140f70ee241a648c6335cf3055dcf2d6074d5ef7966b55925d
47796a46d5c191e29988d2d657332b3d7f9f5278b3951049e98f80a2b0c11d5e
SH256 hash:
9f01d9f2ed07e630ec078efa5d760762c3c8ad3b06e9e8a9062a37d63d57b026
MD5 hash:
9fbb8cec55b2115c00c0ba386c37ce62
SHA1 hash:
e2378a1c22c35e40fd1c3e19066de4e33b50f24a
Link:
https://www.unpac.me/results/45d0f470-cdbf-4cd2-b68f-d1c75812a6cc/
SH256 hash:
8e366f9f4a93ebafd1383b667c1a70f9cd75bd0c3d02d0f7532133d8efe00c31
MD5 hash:
da8ad1839daae824d8650543d66d34b7
SHA1 hash:
d6458e49e737a30f820ff2f2733a863f9271752d
Link:
https://www.unpac.me/results/45d0f470-cdbf-4cd2-b68f-d1c75812a6cc/
SH256 hash:
77c54b077789c0f6523b29fec23823227ffeca21d82c627e63f92d95b59e1905
MD5 hash:
1297f9daae9378926474c3302f54e030
SHA1 hash:
102ad51672793c60082bbd5abef78fb82d063925
Link:
https://www.unpac.me/results/45d0f470-cdbf-4cd2-b68f-d1c75812a6cc/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/77c54b077789/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/77c54b077789c0f6523b29fec23823227ffeca21d82c627e63f92d95b59e1905

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:exploit_any_poppopret
Create hunting rule
Author:Jeff White [karttoon@gmail.com] @noottrak
Description:Identify POP -> POP -> RET opcodes for quick ROP Gadget creation in target binaries.
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
Rule name:Typical_Malware_String_Transforms
Create hunting rule
Author:Florian Roth
Description:Detects typical strings in a reversed or otherwise modified form
Reference:Internal Research
Rule name:Typical_Malware_String_Transforms_RID3473
Create hunting rule
Author:Florian Roth
Description:Detects typical strings in a reversed or otherwise modified form
Reference:Internal Research

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

Formbook

Executable exe 77c54b077789c0f6523b29fec23823227ffeca21d82c627e63f92d95b59e1905

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/280233/

Comments