MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 55dc099e790b76a62f56ef105ca53205ea69d9f4027a93554b03d573f112d643. 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: 55dc099e790b76a62f56ef105ca53205ea69d9f4027a93554b03d573f112d643
SHA3-384 hash: aa4cb14794e25055fcb259289c5b3610dee6aa7b1e8da707ce8b0269c0bf7425186fb041f02fd64f70f5953a2d265d25
SHA1 hash: e6bece6beffcd17c46750905bf89687de514af0e
MD5 hash: 059d92b876948ff3102b8c78e26621d0
humanhash: romeo-fix-bacon-neptune
File name:REMMITANCE COPY.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:951'296 bytes
First seen:2021-08-24 10:39:51 UTC
Last seen:2021-08-24 11:37:41 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'665 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:UYcsGI/cSU+zdTGN/u+I7tTduj0E/VE1/SvmzgLcYz+V77ntOURyawjAJEp2EObk:UcnzdyhmtT879E1aHcE+tDRajr
TLSH T1C1159D306389C244EC1A8FF0167CF7A402F235E7B6C5CD6A1AEA714CCE5E9D12A1765B
dhash icon c8e4c2d1f5349c09 (15 x AgentTesla, 12 x Formbook, 8 x SnakeKeylogger)
Reporter GovCERT_CH
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
3
# of downloads :
343
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
REMMITANCE COPY.exe
Verdict:
Malicious activity
Analysis date:
2021-08-24 10:41:51 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/0fbcc3dc-0cfe-4b96-b473-795029b38a03

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/181823/
Detection(s):
SecuriteInfo.com.W32.MSIL_Kryptik.DVA.genEldorado.16353.22151.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Unauthorized injection to a recently created process
Creating a file
Launching a process
Launching cmd.exe command interpreter
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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/a2976cfd-dcb3-4aaa-9557-e2a915644ca9
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/838145
Signature
C2 URLs / IPs found in malware configuration
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)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: CMSTP Execution Process Creation
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 sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 470576 Sample: REMMITANCE COPY.exe Startdate: 24/08/2021 Architecture: WINDOWS Score: 100 31 www.dailyinformers.com 2->31 33 dailyinformers.com 2->33 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 7 other signatures 2->55 10 REMMITANCE COPY.exe 3 2->10         started        signatures3 process4 file5 29 C:\Users\user\...\REMMITANCE COPY.exe.log, ASCII 10->29 dropped 57 Injects a PE file into a foreign processes 10->57 14 REMMITANCE COPY.exe 10->14         started        signatures6 process7 signatures8 59 Modifies the context of a thread in another process (thread injection) 14->59 61 Maps a DLL or memory area into another process 14->61 63 Sample uses process hollowing technique 14->63 65 Queues an APC in another process (thread injection) 14->65 17 cmstp.exe 14->17         started        20 explorer.exe 14->20 injected 23 autoconv.exe 14->23         started        process9 dnsIp10 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 Tries to detect virtualization through RDTSC time measurements 17->45 25 cmd.exe 1 17->25         started        35 virtualisbureautique.com 91.216.107.231, 49720, 80 RMI-FITECHFR France 20->35 37 www.trhszyy.com 72.44.66.139, 49718, 80 MULTA-ASN1US United States 20->37 39 7 other IPs or domains 20->39 47 System process connects to network (likely due to code injection or exploit) 20->47 signatures11 process12 process13 27 conhost.exe 25->27         started       
Detection:
xloader
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Link:
https://mwdb.cert.pl/sample/55dc099e790b76a62f56ef105ca53205ea69d9f4027a93554b03d573f112d643/
Threat name:
Win32.Trojan.FormBook
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Status:
Malicious
First seen:
2021-08-24 09:15:55 UTC
AV detection:
19 of 28 (67.86%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=kxoathtzbn3kml2w54ifzjjsaxvgtwpuaj5jgvklapkxh4is2zbq._file
Result
Malware family:
xloader
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Score:
  10/10
Tags:
family:xloader campaign:kmb0 loader rat suricata
Link:
https://tria.ge/reports/210824-vjwpntf4gn/
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 UnmapMainImage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.2923grand.com/kmb0/
Unpacked files
SH256 hash:
da269d34aaa40e5c939317abb0745b73fecc69d7f7f6c11b47a0e5c0398d5ae0
MD5 hash:
fd652a4b87f8f37c284c7e7c689a9893
SHA1 hash:
e39253de8427e9fd5a5656c4212e57723a1cf941
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/6359c7b9-38e4-4144-93d9-bdedc2b5738d/
Parent samples :
21583b5c850ded9f371f4bf0c64a919c3d6411b3945b5e967c5f1a999eef42e0
55dc099e790b76a62f56ef105ca53205ea69d9f4027a93554b03d573f112d643
31141d17d3796c0225ad5cb5b2e93169f3435e5274ace903fbe046a46b99028f
ea0398e9c644309652d60f4261c03ba7aa64bf8fddd4960c7e65fcb732af4530
SH256 hash:
9dbfd457ba235a449a4a8c8bcd2ab806bb2cc742b25b42f123d649b531a0dabe
MD5 hash:
ffc443e3baecde315dc02c42b9359f91
SHA1 hash:
ed8c074f25f0e5c283cdb949fd3c934ef5d512e3
Link:
https://www.unpac.me/results/6359c7b9-38e4-4144-93d9-bdedc2b5738d/
SH256 hash:
6912e4bedd1288f116e968f0a79d9797f6d6bd24d45a5f10c52e20f9d33b8c61
MD5 hash:
03bde4a82ad64c0f314985232fbca3fa
SHA1 hash:
e8d0b6339e94192eaaca32c812f914e60576dca6
Link:
https://www.unpac.me/results/6359c7b9-38e4-4144-93d9-bdedc2b5738d/
SH256 hash:
55dc099e790b76a62f56ef105ca53205ea69d9f4027a93554b03d573f112d643
MD5 hash:
059d92b876948ff3102b8c78e26621d0
SHA1 hash:
e6bece6beffcd17c46750905bf89687de514af0e
Link:
https://www.unpac.me/results/6359c7b9-38e4-4144-93d9-bdedc2b5738d/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/55dc099e790b76a62f56ef105ca53205ea69d9f4027a93554b03d573f112d643

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:pe_imphash
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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.

Malspam

Formbook

Executable exe 55dc099e790b76a62f56ef105ca53205ea69d9f4027a93554b03d573f112d643

(this sample)

  
Dropped by
xloader
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/181823/

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