MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 83d0b42c68e4578eace3ab7aa8929cecfad5f1c2c9bd75c715869bf9b48fdf4c. 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: 16


Intelligence 16 IOCs YARA 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 83d0b42c68e4578eace3ab7aa8929cecfad5f1c2c9bd75c715869bf9b48fdf4c
SHA3-384 hash: 985048de81645c8877c8627c26c0746a0585c000fd5f092487deb85279f75b34d8f38eb390b912a8bc2959f0df884699
SHA1 hash: f0875da9110d9021334c79d6030afcd71719824c
MD5 hash: 45eb35294b6e745b1fd93416242afcf2
humanhash: north-steak-ten-happy
File name:45eb35294b6e745b1fd93416242afcf2
Download: download sample
Signature Formbook
Create hunting rule
File size:256'242 bytes
First seen:2023-03-09 01:12:33 UTC
Last seen:2023-03-09 02:33:37 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 427 x GuLoader)
ssdeep 6144:vYa6nJ13PuZVZV+72RUu8dISF2jDC9sEWC9FCOUAk:vY9Jl4TV+7zuqIZXC9sPCHsAk
Threatray 2'243 similar samples on MalwareBazaar
TLSH T17A44136C9168C423DD7129341F7A42336EF87B3506E45F8A63902FA9BC73A91842FB53
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter Anonymous
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
229
Origin country :
KR KR
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
45eb35294b6e745b1fd93416242afcf2
Verdict:
Malicious activity
Analysis date:
2023-03-09 01:14:01 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/cb9e80f1-5d74-46a7-8c55-625f7d4fea48

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/372800/
Detection(s):
Sanesecurity.Malware.28885.BadCo.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a file in the %temp% directory
Creating a window
Creating a process from a recently created file
Сreating synchronization primitives
Launching a process
DNS request
Sending an HTTP GET request
Searching for synchronization primitives
Reading critical registry keys
Unauthorized injection to a recently created process
Launching the default Windows debugger (dwwin.exe)
Unauthorized injection to a recently created process by context flags manipulation
Stealing user critical data
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
83%
Tags:
overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/6409329e8b48bcea611f6750/reports/958fd370-e0fc-4742-b415-d2844cff6a66/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/83d0b42c68e4578eace3ab7aa8929cecfad5f1c2c9bd75c715869bf9b48fdf4c
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/30e07c3c-3857-4893-bda0-29793c4c62e2
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
evad.rans.troj.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1189947
Signature
Antivirus detection for dropped file
Antivirus detection for URL or domain
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Found potential ransomware demand text
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 dropped file
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 harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses netsh to modify the Windows network and firewall settings
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 12243 Sample: h42aUGJl0v.exe Startdate: 09/03/2023 Architecture: WINDOWS Score: 100 38 www.zqxlvshi.com 2->38 40 www.xn--ireneregg-v9a.com 2->40 42 31 other IPs or domains 2->42 58 Snort IDS alert for network traffic 2->58 60 Malicious sample detected (through community Yara rule) 2->60 62 Antivirus detection for URL or domain 2->62 64 6 other signatures 2->64 12 h42aUGJl0v.exe 19 2->12         started        signatures3 process4 file5 36 C:\Users\user\AppData\Local\...\wkiwzll.exe, PE32 12->36 dropped 15 wkiwzll.exe 12->15         started        process6 signatures7 76 Antivirus detection for dropped file 15->76 78 Multi AV Scanner detection for dropped file 15->78 80 Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors) 15->80 82 Maps a DLL or memory area into another process 15->82 18 wkiwzll.exe 15->18         started        process8 signatures9 50 Modifies the context of a thread in another process (thread injection) 18->50 52 Maps a DLL or memory area into another process 18->52 54 Sample uses process hollowing technique 18->54 56 Queues an APC in another process (thread injection) 18->56 21 RAVCpl64.exe 18->21 injected process10 process11 23 netsh.exe 13 21->23         started        26 autoconv.exe 21->26         started        signatures12 66 Tries to steal Mail credentials (via file / registry access) 23->66 68 Tries to harvest and steal browser information (history, passwords, etc) 23->68 70 Writes to foreign memory regions 23->70 72 3 other signatures 23->72 28 explorer.exe 4 1 23->28 injected 32 firefox.exe 23->32         started        process13 dnsIp14 44 www.dooodbox.com 154.213.25.52, 49809, 49815, 49816 YISUCLOUDLTD-AS-APYISUCLOUDLTDHK Seychelles 28->44 46 www.623891.xyz 156.236.67.182, 49835, 49836, 49837 YISUCLOUDLTD-AS-APYISUCLOUDLTDHK Seychelles 28->46 48 19 other IPs or domains 28->48 74 System process connects to network (likely due to code injection or exploit) 28->74 34 WerFault.exe 4 32->34         started        signatures15 process16
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/83d0b42c68e4578eace3ab7aa8929cecfad5f1c2c9bd75c715869bf9b48fdf4c/
Threat name:
Win32.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2023-03-08 07:56:10 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
21 of 37 (56.76%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qpilildi4rly5lhdvn5kreu45t5nl4oczg6xlryvq2n7tnep35ga._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
31d4fa7c04a77660000eeecf8f66e38d6108f460ea7b539744d7bf9216266a50
Formbook
4b2c21ea5f69768b3fa702304683c99e18dea0823d0c8585cec84be4210f08da
Formbook
4e11fcc1a1b57eda0d4a01087856ab72ea159ec8ad1f8430c0db94fb250c65e2
Formbook
50491f2b6ccfe301b5bd0d8ffe8e82a524a251c076856684deb7c3c6fa85d238
Formbook
5f2de407396cfb921e5db52d5efb0fbfd44e7257630b079e02f83a1ed61ab4b4
Formbook
8aa4a5feee91f2caa993c9624153ee2ecbe97098fc7470a5103c408376b2a12a
Formbook
9a5ebc18e1e245dd6f68178177968709f8aa596b31e3a514f1fae54280b4e2a3
Formbook
a3a3e10ea96961c3e5cc533be186a83f18fea89a5beb3074b04f4ee402c5f85f
Formbook
ab080c6c62ba54b560f3feb271626ae0fe1804834f51eeac008f576f4e1299a0
Formbook
+ 2'233 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Link:
https://tria.ge/reports/230309-bk3j9agh3s/
Behaviour
Modifies Internet Explorer settings
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
Program crash
Suspicious use of SetThreadContext
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Unpacked files
SH256 hash:
8e97a192c62b2f413665a33bdc42c1c12e06252c08813b77f8fe2f09b8538faf
MD5 hash:
5b8f6bc203d14db10718d4c4ae50a6e2
SHA1 hash:
7d9145b67e76398f39ac7ea2c1901afc25976118
Detections:
win_formbook_w0
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/f5610ffa-71d4-4821-9cd8-873676019f06/
SH256 hash:
71c4f6732d73ecbcc03bbc944f37ca46221fe9744c6c88d54288a97409182230
MD5 hash:
17f159382868897fefbd24f4fdec6860
SHA1 hash:
aaa6d6d5861f9e09b29bd24c79c04caa6364b3ef
Link:
https://www.unpac.me/results/f5610ffa-71d4-4821-9cd8-873676019f06/
SH256 hash:
833ef63ec03b11902df8259e24c76b1c75bb7288fa2e7d4dfbc29018194e3f0f
MD5 hash:
a03b4db27477b7a62c9faf0e874a611b
SHA1 hash:
c740abf251a14e2eb00c0e4a4060f1d5135e5657
Link:
https://www.unpac.me/results/f5610ffa-71d4-4821-9cd8-873676019f06/
SH256 hash:
83d0b42c68e4578eace3ab7aa8929cecfad5f1c2c9bd75c715869bf9b48fdf4c
MD5 hash:
45eb35294b6e745b1fd93416242afcf2
SHA1 hash:
f0875da9110d9021334c79d6030afcd71719824c
Link:
https://www.unpac.me/results/f5610ffa-71d4-4821-9cd8-873676019f06/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/83d0b42c68e4/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/83d0b42c68e4578eace3ab7aa8929cecfad5f1c2c9bd75c715869bf9b48fdf4c

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:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:Windows_Trojan_Formbook
Create hunting rule
Author:@malgamy12
Rule name:Windows_Trojan_Formbook_1112e116
Create hunting rule
Author:Elastic Security
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.
Rule name:win_formbook_w0
Create hunting rule
Author:@malgamy12

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/372800/

Comments