MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 883b2afba671ff4851527b315260a4415a111c013811fec1822dcae4076628e5. 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: 20


Intelligence 20 IOCs YARA 5 File information Comments
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SHA256 hash: 883b2afba671ff4851527b315260a4415a111c013811fec1822dcae4076628e5
SHA3-384 hash: cec2078fe70e21e0be51eb08fceb7e2875adae46d4081b0edbfbb53201207e045162e9e9109235b40793e80a7958ddc2
SHA1 hash: ef1f98cd080aca6cbf0b1ea8b08e7ab492435ae8
MD5 hash: da966801158ea63939a23e310275241a
humanhash: alanine-north-equal-crazy
File name:Dekont.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:604'672 bytes
First seen:2024-09-25 06:29:48 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'737 x AgentTesla, 19'596 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:Uh8bQbrxKlcjdOliPwsSpRYAKrgCqZKVvsABefO5fw:U+I9kiPqR/04KCABem
Threatray 3'626 similar samples on MalwareBazaar
TLSH T188D402852255CB1AD4A64BB40563D2FC27B55ECDB812C34B5FCABEEF7C7AB000A40766
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
Reporter abuse_ch
Tags:exe FormBook geo TUR

Intelligence

File Origin
# of uploads :
1
# of downloads :
396
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
Dekont.exe
Verdict:
Malicious activity
Analysis date:
2024-09-25 06:46:23 UTC
Tags:
netreactor formbook xloader
Link:
https://app.any.run/tasks/d0212c4a-28b3-4b3f-9392-a8012d0bd156

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.Packed2.48025.28502.7042.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66f3adf55346c7b922adef7d
Tags:
Execution Generic Network Static Stealth Powershell Phishing Tori Msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Launching a process
Launching cmd.exe command interpreter
Setting browser functions hooks
Adding an exclusion to Microsoft Defender
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/66f3adf2dcb7aa64740f438f/reports/a1b25317-287d-4a47-9faf-8c721b2d5ff0/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/883b2afba671ff4851527b315260a4415a111c013811fec1822dcae4076628e5
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/4758405f-a497-4973-9f91-7c462eef9c58
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1517901
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
C2 URLs / IPs found in malware configuration
Found direct / indirect Syscall (likely to bypass EDR)
Found malware configuration
Loading BitLocker PowerShell Module
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
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
Tries to resolve many domain names, but no domain seems valid
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1517901 Sample: Dekont.exe Startdate: 25/09/2024 Architecture: WINDOWS Score: 100 36 www.nnevateknoloji.xyz 2->36 38 www.y-language-menu.net 2->38 40 9 other IPs or domains 2->40 44 Suricata IDS alerts for network traffic 2->44 46 Found malware configuration 2->46 48 Malicious sample detected (through community Yara rule) 2->48 52 9 other signatures 2->52 11 Dekont.exe 4 2->11         started        signatures3 50 Performs DNS queries to domains with low reputation 36->50 process4 file5 34 C:\Users\user\AppData\...\Dekont.exe.log, ASCII 11->34 dropped 62 Adds a directory exclusion to Windows Defender 11->62 64 Tries to detect virtualization through RDTSC time measurements 11->64 66 Switches to a custom stack to bypass stack traces 11->66 15 Dekont.exe 11->15         started        18 powershell.exe 23 11->18         started        signatures6 process7 signatures8 68 Modifies the context of a thread in another process (thread injection) 15->68 70 Maps a DLL or memory area into another process 15->70 72 Sample uses process hollowing technique 15->72 76 2 other signatures 15->76 20 explorer.exe 99 7 15->20 injected 74 Loading BitLocker PowerShell Module 18->74 23 WmiPrvSE.exe 18->23         started        25 conhost.exe 18->25         started        process9 dnsIp10 42 www.oko.events 185.26.122.70, 49715, 80 HOSTLANDRU Russian Federation 20->42 27 control.exe 20->27         started        process11 signatures12 54 Modifies the context of a thread in another process (thread injection) 27->54 56 Maps a DLL or memory area into another process 27->56 58 Tries to detect virtualization through RDTSC time measurements 27->58 60 Switches to a custom stack to bypass stack traces 27->60 30 cmd.exe 1 27->30         started        process13 process14 32 conhost.exe 30->32         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/883b2afba671ff4851527b315260a4415a111c013811fec1822dcae4076628e5
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/883b2afba671ff4851527b315260a4415a111c013811fec1822dcae4076628e5/
Threat name:
ByteCode-MSIL.Backdoor.FormBook
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Status:
Malicious
First seen:
2024-09-24 12:18:20 UTC
File Type:
PE (.Net Exe)
Extracted files:
10
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ra5sv65goh7uqukspmyveyfeifnbchabhai75qmcfxfoib3gfdsq._file
Verdict:
malicious
Label(s):
unknown_loader_037
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formbook
Create hunting rule
Similar samples:
18911c12980ff90d3ca5b456a41ba93f6e63d14efa8763ee354c3684e0632795
Formbook
223786813c2b26e84549506a10b63d6a7c619f99551cf4abaf636d1588f8a001
Formbook
3c321f4c7feb1233711409ad1fc9371732c24a302d3e5b9cd5e238ab1a638288
Formbook
4a29c020657514662d82cf92cf660922d45184e961473f08326817611afbbb94
Formbook
55a8d72b696099f7b5803eafc1afd27432754f3c0c90bbdac46a6e964e5818f4
Formbook
5bc4574dc91259c37e24e9fafd52c4798d2ac0b04bdce4ea1959b1c4a1bb1be1
Formbook
a0ec8ea072fa0a81fb5e660f8aa278d9c06bb361080845911208d6579d15605a
Formbook
b71b353da449108a5ed6aac6e44133552651be0099dbba14884af1406874eaa0
Formbook
+ 3'616 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:bc01 discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/240925-g9ht2atama/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Deletes itself
Command and Scripting Interpreter: PowerShell
Formbook payload
Formbook
Verdict:
Malicious
Tags:
formbook diceloader
YARA:
n/a
Link:
https://app.threat.zone/submission/15bbd520-df57-4592-97fc-d12e5906c062
Unpacked files
SH256 hash:
07864a36094fdb51d595bc3e42bce8429054de6c820f8c9dcfe1820c0fd1f8ff
MD5 hash:
d3b47fb3dd8b1c832901282b2d95a83b
SHA1 hash:
84d0afe2d8b7efd5f06eab1ac26d2bc9e25f9c38
Detections:
FormBook
Create hunting rule
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_w0
Create hunting rule
Formbook
Create hunting rule
Link:
https://www.unpac.me/results/8ba65acd-3fee-47f8-bd90-780ded39983c/
Parent samples :
18911c12980ff90d3ca5b456a41ba93f6e63d14efa8763ee354c3684e0632795
55a8d72b696099f7b5803eafc1afd27432754f3c0c90bbdac46a6e964e5818f4
883b2afba671ff4851527b315260a4415a111c013811fec1822dcae4076628e5
8924d6255fe634004cc46de0a9ee6b4d7c44c1612947d747ebea2a6c06d2a37e
c76f4cc201813bc9e4a8d5ae27ce0c59b799f02dd48b3e09af20118a8fe18c50
23bc8acbb8a1e716512ac2ea9426d3fc46938cccac426f344c0314aafb17769e
94f858ec5529f4f52ae1bed542d9a38b2ab7e4be0446c4d9252f0de3d7cf2dce
e7fc9e51d81f4b40dca80a3d83ca54a03120566b6dd6f76e0299546ac178f633
c240de1c470b2ba22b8628de9a10b7d81e9f453eb94a46a9d0875f7f1705409c
090ae9dc91f1165ca92841d7e3485580caa257c2848fed356d78c86e3d72f50b
ec40bd9352347399d79a1393ee4478d945b81a0c5555a8d30bf043afb1e70e93
64a8f5c2209bf86e1aa4489fffa5cf93aee6955b0106909345a313de38ad7885
83e5cd1ba8c1485400c9faa0295df97768515bb2161114790dd6a3d8cbb05c4a
8c3b7bab6d9c32f813aa49cc65578049f516dd8607f6b2b43fd1e696d5b86988
f6f8e9f276a4246055e3bdc46ad1276ef453cbf6d6e8affe67127ea0099bece8
bf7e2c77f1159e34afbead32a16fbff023b6467104ff0220c81f607a2910880e
ece49e828c96a3cbc96535f04ef66109c997cb13a87850c4b66b3de0fd2818f7
6c2cf6bf017b8e9c8731b0b0bc1ddfd20c14e381d5282832d5646ac29158cf73
676528e924dfe6e5e119f33ac5e7e8ee5661f871759e4b32ac27b0a1d243e329
010fc4f0e382f0c0de55b3fcf4b80f6284694833af9d759c584b63a7d540cf2f
SH256 hash:
ead004f88e2731df4bf3728c63a931acc1b9f324a6635e8f02cf85da02065beb
MD5 hash:
9057ae04834a1a20f77f56a91b38def1
SHA1 hash:
ccc8989510d9015fa0d31e16ca038e2df98cdb87
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/8ba65acd-3fee-47f8-bd90-780ded39983c/
SH256 hash:
06fa37d66e83077298915b2c76819e4680a282ad07ae979d2705aa066199a3fb
MD5 hash:
65f0787af92c17adec2e724b03e26200
SHA1 hash:
8a2b392b883a7b5d1ae41083d4d3bdccbd8ea199
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/8ba65acd-3fee-47f8-bd90-780ded39983c/
Parent samples :
d36a3bd128024ada9545b7c02d6fdce79e2a5e778cdfe328cf1b0c8b886a1050
883b2afba671ff4851527b315260a4415a111c013811fec1822dcae4076628e5
SH256 hash:
883b2afba671ff4851527b315260a4415a111c013811fec1822dcae4076628e5
MD5 hash:
da966801158ea63939a23e310275241a
SHA1 hash:
ef1f98cd080aca6cbf0b1ea8b08e7ab492435ae8
Link:
https://www.unpac.me/results/8ba65acd-3fee-47f8-bd90-780ded39983c/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/883b2afba671/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/883b2afba671ff4851527b315260a4415a111c013811fec1822dcae4076628e5

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:AgentTesla_DIFF_Common_Strings_01
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Author:schmidtsz
Description:Identify partial Agent Tesla strings
Rule name:NET
Create hunting rule
Author:malware-lu
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.

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

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