MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c40c041cae1a27fb23c376ee2274b24ff8d003dde416f60204737395a732cff2. 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: 13


Intelligence 13 IOCs YARA 3 File information Comments 1
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SHA256 hash: c40c041cae1a27fb23c376ee2274b24ff8d003dde416f60204737395a732cff2
SHA3-384 hash: 73f387fc0dcab9a7a9b84ab7c5bf35361a2803ab9ea41773cc35a2134666ba120a4449a337c92bd9fd202c59d4a7e59b
SHA1 hash: 0d5d8223ea02e05ee9012908e5a1232d1cc08395
MD5 hash: 1bbadd0767d4cdbdc1251de642aecb47
humanhash: red-stairway-virginia-echo
File name:1bbadd0767d4cdbdc1251de642aecb47
Download: download sample
Signature Formbook
Create hunting rule
File size:296'423 bytes
First seen:2022-04-25 17:07:33 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 56a78d55f3f7af51443e58e0ce2fb5f6 (720 x GuLoader, 451 x Formbook, 295 x Loki)
ssdeep 6144:gNeZw4ta3fVN0D/rpUfTuDDuoj00azVLiFFVjcM/6CcvmM6ugs:gNKabS/NUfTquojLazVLiHB/HEmMn
TLSH T1665401C27742C493D89183354D69EAB147157D2E69969F1B33C4373E38732E2C21AF2A
TrID 48.8% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
16.4% (.EXE) Win64 Executable (generic) (10523/12/4)
10.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
7.0% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon f0f969f8dc7cfcfc (1 x Formbook)
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
284
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/266508/
Detection(s):
SecuriteInfo.com.Trojan.NSISX.Spy.Gen.2.6896.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file in the %AppData% subdirectories
Сreating synchronization primitives
Launching a process
Searching for synchronization primitives
Reading critical registry keys
DNS request
Sending an HTTP GET request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
control.exe overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/6266d58179c6c1e67d2d982d/reports/449a450a-a41a-45dd-ba3f-6301cebfbc1d/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/28be7c0b-5b04-41d9-a342-cfdf13ad2a11
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/982634
Signature
Antivirus detection for URL or domain
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 dropped file
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
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: 615118 Sample: cv4D13gd7z Startdate: 25/04/2022 Architecture: WINDOWS Score: 100 40 www.pyygtu.biz 2->40 56 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->56 58 Found malware configuration 2->58 60 Malicious sample detected (through community Yara rule) 2->60 62 5 other signatures 2->62 11 cv4D13gd7z.exe 18 2->11         started        signatures3 process4 file5 36 C:\Users\user\AppData\...\rlxeockeld.exe, PE32 11->36 dropped 14 rlxeockeld.exe 1 2 11->14         started        process6 file7 38 C:\Users\user\AppData\...\yittvtanpfvlgl.exe, PE32 14->38 dropped 76 Multi AV Scanner detection for dropped file 14->76 78 Tries to detect virtualization through RDTSC time measurements 14->78 18 rlxeockeld.exe 14->18         started        signatures8 process9 signatures10 48 Modifies the context of a thread in another process (thread injection) 18->48 50 Maps a DLL or memory area into another process 18->50 52 Sample uses process hollowing technique 18->52 54 Queues an APC in another process (thread injection) 18->54 21 explorer.exe 18->21 injected 25 raserver.exe 18->25         started        process11 dnsIp12 42 www.urakgroup.com 103.224.212.219, 49766, 80 TRELLIAN-AS-APTrellianPtyLimitedAU Australia 21->42 44 www.demil.info 149.56.2.28, 49759, 80 OVHFR Canada 21->44 46 9 other IPs or domains 21->46 64 System process connects to network (likely due to code injection or exploit) 21->64 66 Performs DNS queries to domains with low reputation 21->66 27 yittvtanpfvlgl.exe 21->27         started        30 yittvtanpfvlgl.exe 21->30         started        68 Modifies the context of a thread in another process (thread injection) 25->68 70 Maps a DLL or memory area into another process 25->70 72 Tries to detect virtualization through RDTSC time measurements 25->72 signatures13 process14 signatures15 74 Multi AV Scanner detection for dropped file 27->74 32 WerFault.exe 3 10 27->32         started        34 WerFault.exe 10 30->34         started        process16
Detection:
xloader
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Link:
https://mwdb.cert.pl/sample/c40c041cae1a27fb23c376ee2274b24ff8d003dde416f60204737395a732cff2/
Threat name:
Win32.Trojan.NSISInject
Create hunting rule
Status:
Malicious
First seen:
2022-04-25 17:08:07 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
19 of 26 (73.08%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=yqgaihfodit7wi6do3xce5fsj74naa654qlpmaqeonzzljzsz7za._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:n6g4 loader persistence rat suricata
Link:
https://tria.ge/reports/220425-vnjfbshaar/
Behaviour
Modifies registry class
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
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
2dde4b043ba690c6a7e1aab0518df6f229f2441b3ca2cfd2c662b5523e5782b0
MD5 hash:
31cdf11ba11ff508633f5f5440ad4a45
SHA1 hash:
1f1195b82cead3e8659438fcb781886db958fa9d
Link:
https://www.unpac.me/results/85620c36-599e-4a1e-8eec-e772bd5ebc75/
Parent samples :
1f74a34a965bb67c02e8f7a733d7d5f98b1b88e11a7816c29934a6a073e662f2
3fbed13bf271b55a9eca7fe2e7ec051fb9e4b02ace3dce84468b1acb57962fb4
69cdb8718955325126a19a236de13ef83b27941b518dd43987d8fbed3ffe9d30
e23f9ca1ce688d9883147d54508d94d1833616df218f6b1ee1e5ba9ff324abf0
232413f73e7b46e00ccf36baf862343989068f3d7271a8c6e037d43b6a497d64
2e84d64eef0d8e78d17e8d286eeff95f97abe0048a66175e5e05d1fc31b0c5d4
61545f6e85bfb0ebb6c65a52d511bc09f9eb8f17f41f303fc4028bfbc6a333dd
edadbe7cf0557fdede01500da1d161ceeac3fadd16760f325da7938d25cf2b6e
bcd57fcb786185b2c8c6acf1f9d0182d06caae28fc6930ced2fcd5a9c81a96fa
f10110817fa77d6bea276c3d4ee43729d9889e760fa6ce503664613a1d5526da
ef5e4f410d3cdeae6dce996c13c836cac3118327d53f364a547eaa12d4f2c2e7
SH256 hash:
bfbc5ce99d8244e60126290c6acf86fa8850804fc75820ac1e8d7ed47d4a40b8
MD5 hash:
c42054cdcec03ab71ebbbc8b8b303439
SHA1 hash:
020359eee9f5807abc687f2d4767dc00b87ddc8e
Link:
https://www.unpac.me/results/85620c36-599e-4a1e-8eec-e772bd5ebc75/
SH256 hash:
3a756ebc192d2bc88e73c9b166052cf4c8481bddf11c7954326abd996d0969b1
MD5 hash:
8e841057f2c196ce470730573d7c0139
SHA1 hash:
f36dff85773e10ad9a657fc4ec61f29c78a9e673
Link:
https://www.unpac.me/results/85620c36-599e-4a1e-8eec-e772bd5ebc75/
SH256 hash:
c40c041cae1a27fb23c376ee2274b24ff8d003dde416f60204737395a732cff2
MD5 hash:
1bbadd0767d4cdbdc1251de642aecb47
SHA1 hash:
0d5d8223ea02e05ee9012908e5a1232d1cc08395
Link:
https://www.unpac.me/results/85620c36-599e-4a1e-8eec-e772bd5ebc75/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c40c041cae1a/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/c40c041cae1a27fb23c376ee2274b24ff8d003dde416f60204737395a732cff2

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:malware_Formbook_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:pdb2
Create hunting rule
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.

Web download

Formbook

Executable exe c40c041cae1a27fb23c376ee2274b24ff8d003dde416f60204737395a732cff2

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2163856/
Cape
Cape
https://www.capesandbox.com/analysis/266508/

Comments


Avatar
zbet commented on 2022-04-25 17:07:38 UTC

url : hxxp://192.3.121.146/444/vbc.exe