MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cef638f9ba310dfd22719a682dfe6ad1a07c06b122b54127e2a6257e9acc7752. 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 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: cef638f9ba310dfd22719a682dfe6ad1a07c06b122b54127e2a6257e9acc7752
SHA3-384 hash: de2883ea754d2b10960ffbea3340af21c0448242345d014b5521323406fdcbfd27d65b4c2996b01ee88baae173433108
SHA1 hash: 1a5c511a9ad317e78e8d1d2274d70511dfd7c1b1
MD5 hash: 2784a34d639dbcd54f77651b0440929c
humanhash: mango-sixteen-nevada-juliet
File name:RFQ.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:544'277 bytes
First seen:2023-01-17 09:24:04 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 429 x GuLoader)
ssdeep 6144:SYa6mVQks/5/JesGxJ4/ZFge3roZHWawLCa4NeNlXQEkhUbvvZXqBP6SJf8:SY6Qz/JObZHWawLCa4NmgMzN66AU
TLSH T1C6C4E16E7BE8C957C02545749FB3D7A99175CD86282E8B432F28A9CCBF623C47C891C4
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 a28ae6e2d6e6a6d0 (1 x Formbook)
Reporter cocaman
Tags:exe FormBook RFQ

Intelligence

File Origin
# of uploads :
1
# of downloads :
231
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
RFQ.exe
Verdict:
Malicious activity
Analysis date:
2023-01-17 09:26:53 UTC
Tags:
stealer trojan formbook
Link:
https://app.any.run/tasks/30626bbd-f6bd-49f0-bc6d-7aab2e7eab68

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/353718/
Detection(s):
SecuriteInfo.com.Win32.Malware-gen.10319.9876.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a window
Creating a process from a recently created file
Сreating synchronization primitives
Searching for synchronization primitives
Launching a process
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Reading critical registry keys
Launching the default Windows debugger (dwwin.exe)
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Stealing user critical data
Unauthorized injection to a system process
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/60902/overview
Behaviour
MalwareBazaar
Verdict:
No Threat
Threat level:
  10/10
Confidence:
100%
Tags:
overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/63c66970e56ca96f6d4ff34b/reports/2e123b8f-48ee-4268-bcba-5ee11309f2c3/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/bb2c064a-2d75-4d13-a56c-0a0028d06540
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1152927
Signature
Antivirus detection for URL or domain
Contains functionality to detect sleep reduction / modifications
Detected unpacking (changes PE section rights)
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
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)
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 785657 Sample: RFQ.exe Startdate: 17/01/2023 Architecture: WINDOWS Score: 100 33 Snort IDS alert for network traffic 2->33 35 Malicious sample detected (through community Yara rule) 2->35 37 Antivirus detection for URL or domain 2->37 39 3 other signatures 2->39 9 RFQ.exe 19 2->9         started        process3 file4 25 C:\Users\user\AppData\Local\Temp\xmqdwd.exe, PE32 9->25 dropped 12 xmqdwd.exe 9->12         started        process5 signatures6 51 Multi AV Scanner detection for dropped file 12->51 53 Detected unpacking (changes PE section rights) 12->53 55 Maps a DLL or memory area into another process 12->55 57 Contains functionality to detect sleep reduction / modifications 12->57 15 xmqdwd.exe 12->15         started        process7 signatures8 59 Modifies the context of a thread in another process (thread injection) 15->59 61 Maps a DLL or memory area into another process 15->61 63 Sample uses process hollowing technique 15->63 65 Queues an APC in another process (thread injection) 15->65 18 explorer.exe 2 6 15->18 injected process9 dnsIp10 27 assamcareerhub.com 119.18.54.156, 49700, 49701, 49702 PUBLIC-DOMAIN-REGISTRYUS India 18->27 29 www.portmart.online 199.192.31.98, 49694, 49695, 49696 NAMECHEAP-NETUS United States 18->29 31 12 other IPs or domains 18->31 41 System process connects to network (likely due to code injection or exploit) 18->41 22 wlanext.exe 13 18->22         started        signatures11 process12 signatures13 43 Tries to steal Mail credentials (via file / registry access) 22->43 45 Tries to harvest and steal browser information (history, passwords, etc) 22->45 47 Modifies the context of a thread in another process (thread injection) 22->47 49 Maps a DLL or memory area into another process 22->49
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/cef638f9ba310dfd22719a682dfe6ad1a07c06b122b54127e2a6257e9acc7752/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2023-01-17 08:32:15 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
20 of 26 (76.92%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=z33dr6n2geg72itrtjuc37tk2gqhybvrek2ucj7cuysx5gwmo5ja._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
n/a
Score:
  8/10
Tags:
n/a
Link:
https://tria.ge/reports/230117-ldly2ahf3x/
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
Loads dropped DLL
Executes dropped EXE
Unpacked files
SH256 hash:
86ff17abe4aa2f277162580251c35dddbf05d9d1196f5514a76bd4244514affd
MD5 hash:
d64365cda6c7deec6cad59370dca9510
SHA1 hash:
7d690c0f179bcd4c52b64bfe4333a77eb507f66c
Detections:
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/6aabe550-bfe0-4b0c-a021-9e291b16f751/
Parent samples :
cef638f9ba310dfd22719a682dfe6ad1a07c06b122b54127e2a6257e9acc7752
3a83557cf45393e6008e0a885f79cb7f904f31d8cde2d42c227c1ce41e28b832
59093a397a33c5e55dea803f4f514c104e55e703b1d9ac102969217d9be6ae5c
4669b95ca73b3835e391016b48633970c1d25f4394bf4046b7eabaab725ad0d9
52659c067eae50044c3989655f17e58a6391c62a23bfb90de95574b119c72b80
3e924b372c019c41e9995a276ce5c1b1487d14ceb9fbc8d606a09a83df5989b8
d45e44065de0cb4b8d6580579480ada6c2bf13c7e10775f606ca7197f6d762e9
b84878e7bdf4123a1c96713885956003153ed5a09570d168ea4f73f9ead64ff6
SH256 hash:
a4e9c7187aac8a30b3e3218c8134a6989d3868cba805e648e82625cfdc050b65
MD5 hash:
f43705625790b837beccd1b0f50eabdc
SHA1 hash:
816728c8b18043c84653ccc91c019900aa67a373
Link:
https://www.unpac.me/results/6aabe550-bfe0-4b0c-a021-9e291b16f751/
SH256 hash:
06ff94bf846ae16738a0e173b96dfc4a07d78592d34fbbf8e3a31b4d039e5cf4
MD5 hash:
3a12a432b8f63713474059d2b11924f2
SHA1 hash:
6897e53d4fded9047d415467db58b7cf925cb940
Link:
https://www.unpac.me/results/6aabe550-bfe0-4b0c-a021-9e291b16f751/
SH256 hash:
cef638f9ba310dfd22719a682dfe6ad1a07c06b122b54127e2a6257e9acc7752
MD5 hash:
2784a34d639dbcd54f77651b0440929c
SHA1 hash:
1a5c511a9ad317e78e8d1d2274d70511dfd7c1b1
Link:
https://www.unpac.me/results/6aabe550-bfe0-4b0c-a021-9e291b16f751/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/cef638f9ba31/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/cef638f9ba310dfd22719a682dfe6ad1a07c06b122b54127e2a6257e9acc7752

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: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.

File information

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

Malspam

Formbook

zip b1dcfc787da7529c477198a644aeb9071bba6bacfb3b6f43104305ed4cf4dfd7

Formbook

Executable exe cef638f9ba310dfd22719a682dfe6ad1a07c06b122b54127e2a6257e9acc7752

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 b1dcfc787da7529c477198a644aeb9071bba6bacfb3b6f43104305ed4cf4dfd7
Cape
Cape
https://www.capesandbox.com/analysis/353718/
  
Dropped by
MD5 02b973ef40db50fcb52fef21baf35a1d

Comments