MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a33b8db0848ce7448d2a1c175abffb27ff8279c903a9376120e4a932f8cdcaf9. 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: 17


Intelligence 17 IOCs YARA 3 File information Comments
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SHA256 hash: a33b8db0848ce7448d2a1c175abffb27ff8279c903a9376120e4a932f8cdcaf9
SHA3-384 hash: 6b7ae35a288fbf64605229f4d2e014395791d52127e18eb05a3342a93043a2c0baa6316c52345cbf46e1d4b43b64517f
SHA1 hash: c4000e11bc66c7d701a9f50a7e0ccbee7292c68a
MD5 hash: 4275c1af7f372a386035ebb1500b7eb5
humanhash: autumn-muppet-delaware-happy
File name:mv tricanhope_020220412.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:274'449 bytes
First seen:2022-04-13 09:28:54 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 3abe302b6d9a1256e6a915429af4ffd2 (271 x GuLoader, 38 x Formbook, 25 x Loki)
ssdeep 6144:zjgZ26nHqGyj+4ay52jEdSZ6YzTUpN6XRD0CV0AZkjQt7IuMXn:oM4KJjCjmYzIzwRhVqj2M3
Threatray 15'055 similar samples on MalwareBazaar
TLSH T17D4413B679E890FBD183CF7D0799B237F37D6610A2798AC337604EAA4B295F015191C2
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
369
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
mv tricanhope_020220412.exe
Verdict:
Malicious activity
Analysis date:
2022-04-13 09:36:11 UTC
Tags:
formbook trojan stealer
Link:
https://app.any.run/tasks/0a92c222-1b15-4dfe-8d58-fd5489bddb13

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
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Link:
https://www.capesandbox.com/analysis/263383/
Detection(s):
SecuriteInfo.com.Gen.Variant.Nemesis.1954.27479.18676.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Creating a process from a recently created file
Searching for the window
Сreating synchronization primitives
Launching cmd.exe command interpreter
Searching for synchronization primitives
Reading critical registry keys
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system process
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/13742/overview
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
control.exe formbook nemesis overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/625697e2eab80a7a6c084a64/reports/8c578125-0cca-45d8-b378-54b8c4a3efd0/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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/bba6751b-095b-43ea-b48e-9307e27db00b
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/976068
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
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 virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 608555 Sample: mv tricanhope_020220412.exe Startdate: 13/04/2022 Architecture: WINDOWS Score: 100 49 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->49 51 Found malware configuration 2->51 53 Malicious sample detected (through community Yara rule) 2->53 55 5 other signatures 2->55 11 mv tricanhope_020220412.exe 18 2->11         started        process3 file4 33 C:\Users\user\AppData\Local\...\tunklvq.exe, PE32 11->33 dropped 14 tunklvq.exe 1 11->14         started        process5 signatures6 65 Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors) 14->65 67 Tries to detect virtualization through RDTSC time measurements 14->67 69 Injects a PE file into a foreign processes 14->69 17 tunklvq.exe 14->17         started        20 conhost.exe 14->20         started        process7 signatures8 41 Modifies the context of a thread in another process (thread injection) 17->41 43 Maps a DLL or memory area into another process 17->43 45 Sample uses process hollowing technique 17->45 47 Queues an APC in another process (thread injection) 17->47 22 explorer.exe 17->22 injected process9 dnsIp10 35 sign.space 15.197.142.173, 49782, 80 TANDEMUS United States 22->35 37 td-ccm-168-233.wixdns.net 34.117.168.233, 49763, 80 GOOGLE-AS-APGoogleAsiaPacificPteLtdSG United States 22->37 39 8 other IPs or domains 22->39 57 System process connects to network (likely due to code injection or exploit) 22->57 26 wscript.exe 22->26         started        signatures11 process12 signatures13 59 Modifies the context of a thread in another process (thread injection) 26->59 61 Maps a DLL or memory area into another process 26->61 63 Tries to detect virtualization through RDTSC time measurements 26->63 29 cmd.exe 1 26->29         started        process14 process15 31 conhost.exe 29->31         started       
Detection:
xloader
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Link:
https://mwdb.cert.pl/sample/a33b8db0848ce7448d2a1c175abffb27ff8279c903a9376120e4a932f8cdcaf9/
Threat name:
Win32.Trojan.FormBook
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Status:
Malicious
First seen:
2022-04-13 09:29:05 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
19 of 25 (76.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=um5y3meerttujdjkdqlvvp73e77ye6ojaoutoyja4sutf6gnzl4q._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0f571806c2d2a6fc5ec6d45df5150d762b4bedee7da83c4b3b887970f12d2da0
Formbook
2a4415721925c12ce8a80719697ffbda5daf88fe34804b0549bc5d5605790cdb
Formbook
8085268c9f2053c82abbff7add9efff451f11994a1ae313718cdecf2c693da06
Formbook
85fe6400c2e0a1890ce5f7c1f5d30e37ba9537721f29cf17c494bb85f1b01ea9
Formbook
a871695c7312b67a4d3e5c3a41094a5c3824fcfa9f02ee67b2e0d21a0ba061d2
Formbook
b14cfba125a0fd02139064d326e1b32bddff5d1ae0e50fff24bc4f9a2f9e1732
Formbook
deac58296321ec67026dc3de7275137fbdf1775e28fbd9e4d3bf528be7bc95ff
Formbook
e00fc23843cafeec11ba2744a376f4bcdd45b9c7bacb33bdac10d386c8920d16
Formbook
f80dd0bf7402bebd03d303c97c8dd3f921d3e923a2521f4a2af2e4bf3c288aa1
Formbook
+ 15'045 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:qbks loader rat suricata
Link:
https://tria.ge/reports/220413-lfwk9aahap/
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 WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Loads dropped DLL
Executes dropped EXE
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
697317d3a8fc67ac718d7314d14ddbf6027c721dedf5bb3004240bded82bf8e9
MD5 hash:
b5bd706f0c129bf5c9905fb2e0000ed3
SHA1 hash:
eec1740862459fe9b25ea6b807436cb734b6ce98
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/da4856fb-2006-46b7-998c-0e3fac361735/
Parent samples :
e00fc23843cafeec11ba2744a376f4bcdd45b9c7bacb33bdac10d386c8920d16
6a54522390180a2d94e47013c901b57095e30d2843c11b8f55d7b63ba8e9dc77
a871695c7312b67a4d3e5c3a41094a5c3824fcfa9f02ee67b2e0d21a0ba061d2
7c2293123941debd43ef19cf3a09a103905f5ef69294b2ec61361fa7a8c88ef2
1efa5bfc7000995766735c565091f45c4e08d1c0f3f7b0b605d022ad72a1f993
a33b8db0848ce7448d2a1c175abffb27ff8279c903a9376120e4a932f8cdcaf9
SH256 hash:
dbf6a6d0b1ded142b1859d0157e1ba82f30eabb09b2c24f5d9f6a403e291d091
MD5 hash:
b26d029b17b99542174e3d7c4054d777
SHA1 hash:
ab60a64d9c10c256e1af52d1b7606a6d0ef49399
Link:
https://www.unpac.me/results/da4856fb-2006-46b7-998c-0e3fac361735/
SH256 hash:
a33b8db0848ce7448d2a1c175abffb27ff8279c903a9376120e4a932f8cdcaf9
MD5 hash:
4275c1af7f372a386035ebb1500b7eb5
SHA1 hash:
c4000e11bc66c7d701a9f50a7e0ccbee7292c68a
Link:
https://www.unpac.me/results/da4856fb-2006-46b7-998c-0e3fac361735/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/a33b8db0848c/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.18
Link:
https://yomi.yoroi.company/submissions/a33b8db0848ce7448d2a1c175abffb27ff8279c903a9376120e4a932f8cdcaf9

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:Ins_NSIS_Buer_Nov_2020_1
Create hunting rule
Author:Arkbird_SOLG
Description:Detect NSIS installer used for Buer loader
Rule name:malware_Formbook_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
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

Executable exe a33b8db0848ce7448d2a1c175abffb27ff8279c903a9376120e4a932f8cdcaf9

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/263383/

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