MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c115f11cec4e606d14bd5df33ea033f0311ca2e9915e5fb7908736b9cfa18729. 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: c115f11cec4e606d14bd5df33ea033f0311ca2e9915e5fb7908736b9cfa18729
SHA3-384 hash: 577fa075466f37f243e83a7f39f71ede6bf5edd4c46e10a9f3f80a97bf3a285dcf519ff1ddea4670ff11a6d68b6fbda1
SHA1 hash: 6c342d8f0b727586f58007fa8073e5176ee7b652
MD5 hash: 00e7692bd5da0993f8cd7ed1c4b35d26
humanhash: music-harry-failed-hamper
File name:otr69022.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:263'132 bytes
First seen:2021-10-25 13:26:37 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash b76363e9cb88bf9390860da8e50999d2 (464 x Formbook, 184 x AgentTesla, 122 x SnakeKeylogger)
ssdeep 6144:wBlL/cKuWKPwqHN2iiAmJyJC0ggUvn9NNK9sncNiq:CeKs2gtJC0Uxli
Threatray 10'910 similar samples on MalwareBazaar
TLSH T1A044129033D6D8B3D04B4772C9FAD966F9BADB002662505383B05B7BE9814C3299E5E3
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 :
277
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/199923/
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a file
Creating a window
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
80%
Tags:
overlay packed
Link:
https://www.filescan.io/uploads/6176b0a99a5a1e91c5d22667/reports/209c63c8-262a-43e8-974f-684fdf595463/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/63f33736-63b0-4d53-baa1-72dedd0499ce
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/876321
Signature
C2 URLs / IPs found in malware configuration
Detected unpacking (changes PE section rights)
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
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: 508750 Sample: otr69022.exe Startdate: 25/10/2021 Architecture: WINDOWS Score: 100 31 www.thegroveonglendale.com 2->31 47 Found malware configuration 2->47 49 Malicious sample detected (through community Yara rule) 2->49 51 Yara detected FormBook 2->51 53 3 other signatures 2->53 10 otr69022.exe 17 2->10         started        signatures3 process4 file5 29 C:\Users\user\AppData\Local\Temp\...\mbba.dll, PE32 10->29 dropped 55 Detected unpacking (changes PE section rights) 10->55 57 Tries to detect virtualization through RDTSC time measurements 10->57 59 Injects a PE file into a foreign processes 10->59 14 otr69022.exe 10->14         started        signatures6 process7 signatures8 61 Modifies the context of a thread in another process (thread injection) 14->61 63 Maps a DLL or memory area into another process 14->63 65 Sample uses process hollowing technique 14->65 67 Queues an APC in another process (thread injection) 14->67 17 control.exe 14->17         started        20 explorer.exe 14->20 injected process9 dnsIp10 37 Self deletion via cmd delete 17->37 39 Modifies the context of a thread in another process (thread injection) 17->39 41 Maps a DLL or memory area into another process 17->41 43 Tries to detect virtualization through RDTSC time measurements 17->43 23 cmd.exe 1 17->23         started        33 www.klarnabet.com 203.170.80.250, 49795, 80 DREAMSCAPE-AS-APDreamscapeNetworksLimitedAU Australia 20->33 35 www.doeful.com 104.21.79.131, 49790, 80 CLOUDFLARENETUS United States 20->35 45 System process connects to network (likely due to code injection or exploit) 20->45 25 autofmt.exe 20->25         started        signatures11 process12 process13 27 conhost.exe 23->27         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c115f11cec4e606d14bd5df33ea033f0311ca2e9915e5fb7908736b9cfa18729/
Threat name:
Win32.Trojan.Nsisx
Create hunting rule
Status:
Malicious
First seen:
2021-10-25 13:27:05 UTC
AV detection:
16 of 45 (35.56%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yek7chhmjzqg2ff5lxzt5ibt6ayrzixjsfpf7n4qq43ltt5bq4uq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
19f4dafb701e0d7f58c46397026e8d74b8d63fafe58caf3fa44739bb5bc41bb9
Formbook
7249d67d49a862e577120d3125e33566c61241969b4f48d701de97a5fe0abc04
Formbook
90661f85c7864f95181eceebf32eafd0b4b166aebdfdf5529edfc3a3dd6c0715
Formbook
c12bd972fbf3301e40fa75c3e295a8bd0233bf1f5fa100e79ab7f6755f7b6788
Formbook
d16da4e6a63f26601dd3c961f31708db79be1aead7cf3834fafa47095b1a45a6
Formbook
f840ca48e6381b385534156b8245c39dee4d1c95e18569c91b5537ff2f20aa7d
Formbook
fa0d4eeae6c743ddc44d9664b0e6d44238beff477d1f4e9a560e68026a4264d9
Formbook
fa5502396dc7ec0fc5508d901eb8b3e555558cdbaff338a1911db0edd4563b78
Formbook
+ 10'900 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:rv9n rat spyware stealer trojan
Link:
https://tria.ge/reports/211025-qp4ensgbh7/
Behaviour
Enumerates system info in registry
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 WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Deletes itself
Loads dropped DLL
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.cjspizza.net/rv9n/
Unpacked files
SH256 hash:
c115f11cec4e606d14bd5df33ea033f0311ca2e9915e5fb7908736b9cfa18729
MD5 hash:
00e7692bd5da0993f8cd7ed1c4b35d26
SHA1 hash:
6c342d8f0b727586f58007fa8073e5176ee7b652
Link:
https://www.unpac.me/results/9a994cc5-5fbc-4156-bd06-37a54d1a17d5/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/c115f11cec4e/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.47
Link:
https://yomi.yoroi.company/submissions/c115f11cec4e606d14bd5df33ea033f0311ca2e9915e5fb7908736b9cfa18729

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:Formbook
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
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
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 c115f11cec4e606d14bd5df33ea033f0311ca2e9915e5fb7908736b9cfa18729

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/199923/

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