MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 21583b5c850ded9f371f4bf0c64a919c3d6411b3945b5e967c5f1a999eef42e0. 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: 12


Intelligence 12 IOCs YARA 3 File information Comments
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SHA256 hash: 21583b5c850ded9f371f4bf0c64a919c3d6411b3945b5e967c5f1a999eef42e0
SHA3-384 hash: f1944889306f6ed2b9dfc96d1a41dc32b85b3dc3e5498b3d88c63d8488c924562d8b8bff314a5ab471e8f7d37559fb03
SHA1 hash: 6c6166a67994d05e796a436a1114ece3851deaf9
MD5 hash: b4a82fa3deda44790d510e551aa47100
humanhash: two-batman-yankee-kitten
File name:REMMITANCE COPY.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:855'040 bytes
First seen:2021-08-23 11:58:03 UTC
Last seen:2021-08-23 13:17:10 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 24576:fbv19vb8f36LYi/Gu21q0p+lrC7CGOge8:fnYpOGuKpkC7IgX
Threatray 8'539 similar samples on MalwareBazaar
TLSH T11405F53D19B91637C1B5C355EBE59423F148986FB404AEAA6CCE03A7030BA9735C763E
Reporter malwarelabnet
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
2
# of downloads :
291
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
REMMITANCE COPY.exe
Verdict:
Malicious activity
Analysis date:
2021-08-23 12:05:41 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/1e0209a8-e6fc-405f-b7cb-3bc837260e74

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/181491/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Unauthorized injection to a recently created process
Creating a file
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Result
Verdict:
UNKNOWN
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/25f1c4c4-37e3-4ae9-9397-224e06ddec4c
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/837499
Signature
.NET source code contains very large strings
C2 URLs / IPs found in malware configuration
Found malware configuration
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
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 469930 Sample: REMMITANCE COPY.exe Startdate: 23/08/2021 Architecture: WINDOWS Score: 100 36 www.richardrealestate1.com 2->36 38 www.heathershomebuying.com 2->38 40 5 other IPs or domains 2->40 44 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->44 46 Found malware configuration 2->46 48 Malicious sample detected (through community Yara rule) 2->48 50 8 other signatures 2->50 11 REMMITANCE COPY.exe 3 2->11         started        signatures3 process4 file5 28 C:\Users\user\...\REMMITANCE COPY.exe.log, ASCII 11->28 dropped 14 REMMITANCE COPY.exe 11->14         started        process6 signatures7 58 Modifies the context of a thread in another process (thread injection) 14->58 60 Maps a DLL or memory area into another process 14->60 62 Sample uses process hollowing technique 14->62 64 Queues an APC in another process (thread injection) 14->64 17 explorer.exe 14->17 injected process8 dnsIp9 30 www.lovefromnewyork.com 208.91.197.27, 49755, 80 CONFLUENCE-NETWORK-INCVG Virgin Islands (BRITISH) 17->30 32 www.tayreypsllc.com 172.67.169.252, 49752, 80 CLOUDFLARENETUS United States 17->32 34 7 other IPs or domains 17->34 42 System process connects to network (likely due to code injection or exploit) 17->42 21 raserver.exe 17->21         started        signatures10 process11 signatures12 52 Modifies the context of a thread in another process (thread injection) 21->52 54 Maps a DLL or memory area into another process 21->54 56 Tries to detect virtualization through RDTSC time measurements 21->56 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/21583b5c850ded9f371f4bf0c64a919c3d6411b3945b5e967c5f1a999eef42e0/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-08-23 11:58:07 UTC
AV detection:
24 of 46 (52.17%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=efmdwxefbxwz6ny7jpymmsurtq6wientsrnv5ft4l4njthxpilqa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
06e6b50f2a956f1fff285d4717f7dc33af56f8f08255f744cbd0eba9b0fe82e9
Formbook
59ced73cabf35385aaedb67d1b0cd813cc16f5f8e056add78cf50f3abc28351a
Formbook
6db6324fe282260a224e77fff9bdad3240a63d48ac587f2a701785ea69c317a5
Formbook
6f16d3f4edabb65e90a4d55adfd531ca7b9b04eda32bb1a5c2489ab2e49f0491
Formbook
8b39bf75ce8ca2ecadafeb01a2ff33fc07419198e5b222bf20385ecbf2da0ff4
Formbook
9998ff1d42d8af0fcc166bea36887eebf182e91d1816853d9f80e6cbbbaf9145
Formbook
bf6ae876108b5fec915d91bd36d3ccd22c8593be29412521c32a4b3f11a757f0
Formbook
cc0e5224224cd1137d4cdff798462d06a7e5e39e97858aac2ecc3c27b5c30b42
Formbook
cfc09cd2a2109a174ccbc346779f2e19316be4601173e2e85c3e4314cc139017
Formbook
d050c9c41083b76f378f09e9c5394cfef4a18d7de11a87720b2e5e3cf704330b
Formbook
+ 8'529 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:kmb0 loader rat suricata
Link:
https://tria.ge/reports/210823-8kfze8sk5e/
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 UnmapMainImage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.2923grand.com/kmb0/
Unpacked files
SH256 hash:
da269d34aaa40e5c939317abb0745b73fecc69d7f7f6c11b47a0e5c0398d5ae0
MD5 hash:
fd652a4b87f8f37c284c7e7c689a9893
SHA1 hash:
e39253de8427e9fd5a5656c4212e57723a1cf941
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/9bf96c51-9979-45cf-900c-fbc9aa9b5fba/
Parent samples :
21583b5c850ded9f371f4bf0c64a919c3d6411b3945b5e967c5f1a999eef42e0
55dc099e790b76a62f56ef105ca53205ea69d9f4027a93554b03d573f112d643
31141d17d3796c0225ad5cb5b2e93169f3435e5274ace903fbe046a46b99028f
ea0398e9c644309652d60f4261c03ba7aa64bf8fddd4960c7e65fcb732af4530
SH256 hash:
6912e4bedd1288f116e968f0a79d9797f6d6bd24d45a5f10c52e20f9d33b8c61
MD5 hash:
03bde4a82ad64c0f314985232fbca3fa
SHA1 hash:
e8d0b6339e94192eaaca32c812f914e60576dca6
Link:
https://www.unpac.me/results/9bf96c51-9979-45cf-900c-fbc9aa9b5fba/
SH256 hash:
12e1c4e6b1ab1eb279d86947e57f747a6c15992c5c732e56f026508771254150
MD5 hash:
3795d03f33d8db147f9b0efbf910fdd3
SHA1 hash:
dc4660e00cea3b01337aced585a814db084fea34
Link:
https://www.unpac.me/results/9bf96c51-9979-45cf-900c-fbc9aa9b5fba/
SH256 hash:
21583b5c850ded9f371f4bf0c64a919c3d6411b3945b5e967c5f1a999eef42e0
MD5 hash:
b4a82fa3deda44790d510e551aa47100
SHA1 hash:
6c6166a67994d05e796a436a1114ece3851deaf9
Link:
https://www.unpac.me/results/9bf96c51-9979-45cf-900c-fbc9aa9b5fba/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/21583b5c850d/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.81
Link:
https://yomi.yoroi.company/submissions/21583b5c850ded9f371f4bf0c64a919c3d6411b3945b5e967c5f1a999eef42e0

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:pe_imphash
Create hunting rule
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.

Cape
Cape
https://www.capesandbox.com/analysis/181491/

Comments