MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a3af8681c8cd48f98c8bf2666e12d285963d2375ea4982e975144fee69806f82. 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: 10


Intelligence 10 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a3af8681c8cd48f98c8bf2666e12d285963d2375ea4982e975144fee69806f82
SHA3-384 hash: 9d5c083e33c0278b3b81dcd5d60a5d6ed166f3eb17bdec105430a7589634ef582d999925a72aba8e627030cf64c5b3ac
SHA1 hash: 848f1724c5ccdebf600e6a15bfdb97711fca73e0
MD5 hash: 4170b2cdbf0824c322d031ba1276b399
humanhash: salami-red-double-shade
File name:M23ErBe32Z0IeOO.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:740'864 bytes
First seen:2021-04-29 12:20:40 UTC
Last seen:2021-04-30 09:10:47 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'470 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:3LZH3fgk81BemmSvePzJgTRrd5+nf3DNdYhHg:3Luk8rUy5+nf3xdiA
Threatray 1'582 similar samples on MalwareBazaar
TLSH 4EF4793523ECCA95D06A6A3430935B1037F7AC16BE67FCA8ECD851AD15726C4B183E93
Reporter James_inthe_box
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
72
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/146665/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.688-1.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
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.
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/702275
Signature
C2 URLs / IPs found in malware configuration
Found 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 submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 400059 Sample: M23ErBe32Z0IeOO.exe Startdate: 29/04/2021 Architecture: WINDOWS Score: 100 33 www.jewelta.com 2->33 35 www.ihdeuruim.com 2->35 37 www.helenafinaltouch.com 2->37 45 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->45 47 Found malware configuration 2->47 49 Malicious sample detected (through community Yara rule) 2->49 51 6 other signatures 2->51 11 M23ErBe32Z0IeOO.exe 3 2->11         started        signatures3 process4 file5 31 C:\Users\user\...\M23ErBe32Z0IeOO.exe.log, ASCII 11->31 dropped 61 Writes to foreign memory regions 11->61 63 Injects a PE file into a foreign processes 11->63 15 RegSvcs.exe 11->15         started        signatures6 process7 signatures8 65 Modifies the context of a thread in another process (thread injection) 15->65 67 Maps a DLL or memory area into another process 15->67 69 Sample uses process hollowing technique 15->69 71 2 other signatures 15->71 18 explorer.exe 6 15->18 injected process9 dnsIp10 39 www.ssc018.com 104.164.224.84, 49728, 80 EGIHOSTINGUS United States 18->39 41 www.888yuntu.com 104.252.6.32, 49726, 80 EGIHOSTINGUS United States 18->41 43 12 other IPs or domains 18->43 53 System process connects to network (likely due to code injection or exploit) 18->53 22 raserver.exe 18->22         started        25 autoconv.exe 18->25         started        signatures11 process12 signatures13 55 Modifies the context of a thread in another process (thread injection) 22->55 57 Maps a DLL or memory area into another process 22->57 59 Tries to detect virtualization through RDTSC time measurements 22->59 27 cmd.exe 1 22->27         started        process14 process15 29 conhost.exe 27->29         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a3af8681c8cd48f98c8bf2666e12d285963d2375ea4982e975144fee69806f82/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-04-29 03:50:33 UTC
File Type:
PE (.Net Exe)
Extracted files:
10
AV detection:
26 of 47 (55.32%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=uoxynaoizveptdel6jtg4ewsqwld2i3v5jeyf2lvcrh642man6ba._file
Verdict:
malicious
Similar samples:
00e599fadd6b7cd568751d9741ad77f85a7c9fdea785deed6898f348efd794fd
Formbook
55f20748f621bf247877b71a3682640e5ec013d51c52363b5c51cca50b44c1bf
Formbook
58415bcbd41e70c3f6d45f7b4fa75cf79c1f86f790decfec1dfe52be21f4c994
Formbook
6c8d9b097832fec5088306fabfeb26cf5aa0c67153134f4c5e356cee935f871e
Formbook
727bc43e3d9cdf3e79c2232cf3f647bdf94ad2012c31403434c17e5bbeb3c339
Formbook
80b056a8c2fee08fd3361a8a271dea407425ca335275d49f81a1c50a06d9ed98
Formbook
ab95bc3c40647b2b700cdb9aba76b6de220fd528fd194e6071c1747df6cb78ce
Formbook
bc4765682b3b1250e178d1154cfd56fbe1fb4ac0c8e8346d9e6f3ed6c661907d
Formbook
e091222f766082c33c0606405115206cb2d915929dfe2ac899b1945d6442c512
Formbook
e9f37a053f32c4f4732ba0ff24dba4d0a57a4e2dc8e8f1698e5601385371ce8e
Formbook
+ 1'572 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader loader rat
Link:
https://tria.ge/reports/210429-mpb7zj8cke/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Xloader Payload
Xloader
Malware Config
C2 Extraction:
http://www.hysjs168.com/uv34/
Unpacked files
SH256 hash:
11cf5a51e593c007ff4f91294cf505ffd5e425e56387c60d81e6479cc284cc3b
MD5 hash:
73cc3f7e7700e6a54cb5f291dffe5aa1
SHA1 hash:
09174f9fa55c9bac0540efb7a8c682878a32d02d
Link:
https://www.unpac.me/results/d85a1cb4-e655-47a8-ac7d-16f265465453/
SH256 hash:
a3af8681c8cd48f98c8bf2666e12d285963d2375ea4982e975144fee69806f82
MD5 hash:
4170b2cdbf0824c322d031ba1276b399
SHA1 hash:
848f1724c5ccdebf600e6a15bfdb97711fca73e0
Link:
https://www.unpac.me/results/d85a1cb4-e655-47a8-ac7d-16f265465453/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/a3af8681c8cd48f98c8bf2666e12d285963d2375ea4982e975144fee69806f82

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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time

File information

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

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/146665/

Comments