MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cff84e417e1483abc23bd1ff30bac2fda21a4e80f4dcc210130e3157a42299d2. 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 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: cff84e417e1483abc23bd1ff30bac2fda21a4e80f4dcc210130e3157a42299d2
SHA3-384 hash: ff34726cc293fee8fde2ea38f54a3c32453fed0932ebb801962e8647e3d44c5e5e6b5d29a6f4a49162da92ea69536bc1
SHA1 hash: b1b952a4d1f2f2975484289c2fee09c5ffa42200
MD5 hash: 836dd65f8206612521a583a08109ead1
humanhash: lion-illinois-mirror-queen
File name:usulo.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:234'490 bytes
First seen:2021-08-06 06:00:30 UTC
Last seen:2021-08-06 11:36:17 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 0c517b095db8f3da579eca576ece2d27 (4 x Loki, 3 x Formbook, 1 x AgentTesla)
ssdeep 6144:/7NfH8U4bPiPRpQwZhCWZQ9Y/MiqU/Ll4l:58U4OlPpHvVTe
Threatray 6'353 similar samples on MalwareBazaar
TLSH T1E33423C1A4C50F51E4634DFE9160BE78B52F2393701D421FB2E3288E9C59BDE132A7A6
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
5
# of downloads :
321
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
usulo.exe
Verdict:
Malicious activity
Analysis date:
2021-08-06 06:02:40 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/f25eb858-e31a-41e2-95ec-57c995486849

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/176889/
Detection(s):
SecuriteInfo.com.W32.AIDetect.malware2.9075.5117.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Unauthorized injection to a recently created process
Launching a process
Launching cmd.exe command interpreter
DNS request
Connection attempt
Sending an HTTP GET request
Sending a UDP request
Forced shutdown of a system process
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/dc86898d-110e-4535-8c00-81eef1640e42
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/828092
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Detected unpacking (changes PE section rights)
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 virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 460520 Sample: usulo.exe Startdate: 06/08/2021 Architecture: WINDOWS Score: 100 31 www.cosmicgeneralstore.com 2->31 33 www.sserignou.com 2->33 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 5 other signatures 2->51 11 usulo.exe 1 2->11         started        signatures3 process4 signatures5 61 Detected unpacking (changes PE section rights) 11->61 63 Maps a DLL or memory area into another process 11->63 65 Tries to detect virtualization through RDTSC time measurements 11->65 14 usulo.exe 11->14         started        17 conhost.exe 11->17         started        process6 signatures7 67 Modifies the context of a thread in another process (thread injection) 14->67 69 Maps a DLL or memory area into another process 14->69 71 Sample uses process hollowing technique 14->71 73 Queues an APC in another process (thread injection) 14->73 19 explorer.exe 14->19 injected process8 dnsIp9 35 www.dadaoliangpi.com 160.124.142.178, 49752, 80 POWERLINE-AS-APPOWERLINEDATACENTERHK South Africa 19->35 37 dualstack.sni.bigcartel.map.fastly.net 151.101.1.211, 49741, 80 FASTLYUS United States 19->37 39 15 other IPs or domains 19->39 53 System process connects to network (likely due to code injection or exploit) 19->53 23 mstsc.exe 12 19->23         started        signatures10 process11 dnsIp12 41 www.ross76.com 23->41 43 ross76.com 23->43 55 Modifies the context of a thread in another process (thread injection) 23->55 57 Maps a DLL or memory area into another process 23->57 59 Tries to detect virtualization through RDTSC time measurements 23->59 27 cmd.exe 1 23->27         started        signatures13 process14 process15 29 conhost.exe 27->29         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/cff84e417e1483abc23bd1ff30bac2fda21a4e80f4dcc210130e3157a42299d2/
Threat name:
Win32.Spyware.Noon
Create hunting rule
Status:
Malicious
First seen:
2021-08-06 00:30:00 UTC
AV detection:
10 of 46 (21.74%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=z74e4ql6csb2xqr32h7tbowc7wrbutua6tomeeatbyyvpjbcthja._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0875979d43fc978bb9d4979c2b38690f86e11075b529d32ec98efa659558477b
Formbook
537a1b1e9a633875a74664967b2e62803f01b619fb26df9b4762b6795ee1b0ec
Formbook
727bc43e3d9cdf3e79c2232cf3f647bdf94ad2012c31403434c17e5bbeb3c339
Formbook
80b056a8c2fee08fd3361a8a271dea407425ca335275d49f81a1c50a06d9ed98
Formbook
917b37643dd312610d4b71e47b7841cfe33c1f0e842f8eb9c73101345d37d876
Formbook
ab95bc3c40647b2b700cdb9aba76b6de220fd528fd194e6071c1747df6cb78ce
Formbook
d6425ada378353c0626235fefe3e06abb0c64dd14418d76a6bde00c10d817757
Formbook
e05f95a61609a00f7c8372823b0cd8731524e3d938c8f54a11922491e1a70989
Formbook
e091222f766082c33c0606405115206cb2d915929dfe2ac899b1945d6442c512
Formbook
e3335282720a64aced9b13cfed4c58e850a78f347eca73ecf5dcf4b83925de13
Formbook
+ 6'343 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:fznn loader rat suricata
Link:
https://tria.ge/reports/210806-pztyb16y1x/
Behaviour
Gathers network information
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
Blocklisted process makes network request
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.designsbynandini.com/fznn/
Unpacked files
SH256 hash:
0c8124704d26c2c0065f1f2fd24384b2a44ca1512c56c49fa52e84aed2233527
MD5 hash:
b79f4bc90e22dc6b9fa3459809e8e720
SHA1 hash:
91d1f8f982b03ccb6d984c51fb19b6d0692514ce
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/3f6660e0-ec74-43e0-b32d-09b6adccbd27/
Parent samples :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 hash:
cff84e417e1483abc23bd1ff30bac2fda21a4e80f4dcc210130e3157a42299d2
MD5 hash:
836dd65f8206612521a583a08109ead1
SHA1 hash:
b1b952a4d1f2f2975484289c2fee09c5ffa42200
Link:
https://www.unpac.me/results/3f6660e0-ec74-43e0-b32d-09b6adccbd27/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.13
Link:
https://yomi.yoroi.company/submissions/cff84e417e1483abc23bd1ff30bac2fda21a4e80f4dcc210130e3157a42299d2

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_InTheFuture
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.

Malspam

Formbook

Executable exe cff84e417e1483abc23bd1ff30bac2fda21a4e80f4dcc210130e3157a42299d2

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/176889/

Comments