MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 55f1ae1de8b42e18d3a58fe05fcfa9abe7f6b65e49d44cf136af53c250111cb6. 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
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SHA256 hash: 55f1ae1de8b42e18d3a58fe05fcfa9abe7f6b65e49d44cf136af53c250111cb6
SHA3-384 hash: 965253bf7b0ad37824c9a1cb06a622fc3340ab8570c2a068739f0d588b137ebb606ce34309168fff4d8bfe15804412be
SHA1 hash: dd0f0e694fddced0fc5c3990daf944cdef69571c
MD5 hash: ba4a760b49e31680d17dc6ff890c1837
humanhash: louisiana-minnesota-tango-twenty
File name:Revised Shipping Documents 385099_pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:389'632 bytes
First seen:2021-11-19 08:20:10 UTC
Last seen:2021-11-19 13:17:05 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 6144:o+ih3RjkZZy5BDN+ql3bnR62dTulR4M4Mhn0S0MldLMt3DbG/OyUyZ1vpxArW9DW:Rpy5BDPbnR62dqz4M4Mh03XG/ONyZ1h7
Threatray 11'343 similar samples on MalwareBazaar
TLSH T1F384121A13E94732C57F47BCA4B514140BB6B514AA33F31D8E9430DF2EB7B828652BA7
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
112
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Revised Shipping Documents 385099_pdf.exe
Verdict:
Malicious activity
Analysis date:
2021-11-19 10:17:54 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/c9280b0b-e2a3-4fd8-9dd2-af9820d469ba

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Gathering data
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Unauthorized injection to a recently created process
Creating a file
Сreating synchronization primitives
Launching a process
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/61975e6f43e8f62b669a166c/reports/a604c911-ff48-4124-9d7f-3fa89330e088/overview
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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/41fc6dd1-10dc-4363-8f55-6a140f133e42
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/892571
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Executable has a suspicious name (potential lure to open the executable)
Found malware configuration
Initial sample is a PE file and has a suspicious name
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
Self deletion via cmd delete
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: 525040 Sample: Revised Shipping Documents ... Startdate: 19/11/2021 Architecture: WINDOWS Score: 100 34 www.lakesideshores.com 2->34 36 lakesideshores.com 2->36 38 Found malware configuration 2->38 40 Malicious sample detected (through community Yara rule) 2->40 42 Antivirus detection for URL or domain 2->42 44 9 other signatures 2->44 11 Revised Shipping Documents 385099_pdf.exe 3 2->11         started        signatures3 process4 file5 32 Revised Shipping D... 385099_pdf.exe.log, ASCII 11->32 dropped 14 Revised Shipping Documents 385099_pdf.exe 11->14         started        17 Revised Shipping Documents 385099_pdf.exe 11->17         started        process6 signatures7 54 Modifies the context of a thread in another process (thread injection) 14->54 56 Maps a DLL or memory area into another process 14->56 58 Sample uses process hollowing technique 14->58 60 Queues an APC in another process (thread injection) 14->60 19 explorer.exe 14->19 injected 21 BackgroundTransferHost.exe 13 14->21         started        process8 process9 23 WWAHost.exe 19->23         started        signatures10 46 Self deletion via cmd delete 23->46 48 Modifies the context of a thread in another process (thread injection) 23->48 50 Maps a DLL or memory area into another process 23->50 52 Tries to detect virtualization through RDTSC time measurements 23->52 26 cmd.exe 1 23->26         started        28 explorer.exe 2 139 23->28         started        process11 process12 30 conhost.exe 26->30         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/55f1ae1de8b42e18d3a58fe05fcfa9abe7f6b65e49d44cf136af53c250111cb6/
Threat name:
ByteCode-MSIL.Trojan.Injuke
Create hunting rule
Status:
Malicious
First seen:
2021-11-19 02:38:07 UTC
AV detection:
5 of 45 (11.11%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=kxy24hpiwqxbru5fr7qf7t5jvpt7nns6jhkez4jwv5j4euards3a._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
166559731ad15341f955bf8a16708f93542bef868c33f02f70e9b27f57b991a3
Formbook
5d407049f81d3b75bf2d9eb7dc14662f533b1ca37d283e5ef50e001a7ac1f758
Formbook
6081195c36bebc5f4d29d4c3d4f8d76f2223b4fc220a7087fb078f5f57ceae75
Formbook
73bd80a020bfe9f24dcaff57cd3781d85f20f66ab8d6398263b6a94914ce6319
Formbook
7b11c921e5383232009985b5912967978ae269287359f9c1718c2b37e1a067f8
Formbook
84236953e6059c7733ecd777604a225ee85dc96740a46aac1379d13b3d57630d
Formbook
909b2ca8fbea2b6c03ccf3d90e0416b12df094fcf02c47fbf59839a9ce105538
Formbook
96c1fb2e2f6c0a3a183caa1e28e687301957b892eeee41e8c8334c2ef903073d
Formbook
ad3a88b9bfc7620d83535e96ba20b5bfa805d6e1fb5d8086a75c5f8f3e198b6c
Formbook
ce50b9267e52d36420b01ad72bfa8f64c9d561d6ce1083e29aa68268a06815c4
Formbook
+ 11'333 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:ns87 loader rat suricata
Link:
https://tria.ge/reports/211119-j8zr9shfhj/
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
Suspicious use of SetThreadContext
Deletes itself
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.rubberyslouka.xyz/ns87/
Unpacked files
SH256 hash:
65cf298fe4962168dd53f95cb2abf0134681917339355b0706994abedc7f3efa
MD5 hash:
e70fe2af23fe5459484716825c99848e
SHA1 hash:
91d70dd9f9532ccf11b4aa29a057d6378d67f494
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/af3caf99-1137-4a3f-b90d-d3aa8c149e25/
Parent samples :
ad3a88b9bfc7620d83535e96ba20b5bfa805d6e1fb5d8086a75c5f8f3e198b6c
6081195c36bebc5f4d29d4c3d4f8d76f2223b4fc220a7087fb078f5f57ceae75
96c1fb2e2f6c0a3a183caa1e28e687301957b892eeee41e8c8334c2ef903073d
55f1ae1de8b42e18d3a58fe05fcfa9abe7f6b65e49d44cf136af53c250111cb6
45de0a47d8bee8de67d818ea239f0f9c934c3299be3c3faefacb9e1e4800078c
SH256 hash:
570bbd81c092954df1dab3f9a29030503b7f08246d74b6bb71ca37ed52975687
MD5 hash:
62414f8695547c092bdd7dc33bb5afc7
SHA1 hash:
7d496ba85a5ff71830061d68a89e80060d59fcf7
Link:
https://www.unpac.me/results/af3caf99-1137-4a3f-b90d-d3aa8c149e25/
SH256 hash:
cc5c5860e83b708cd158454165cbeb714767119946049de5aa7677685be75c14
MD5 hash:
83cbea4dec6e5b64a85ee9b6f9ff7598
SHA1 hash:
5c1d12b792c32ba73b7bf2634da5e4d9fbcd7d4e
Link:
https://www.unpac.me/results/af3caf99-1137-4a3f-b90d-d3aa8c149e25/
SH256 hash:
55f1ae1de8b42e18d3a58fe05fcfa9abe7f6b65e49d44cf136af53c250111cb6
MD5 hash:
ba4a760b49e31680d17dc6ff890c1837
SHA1 hash:
dd0f0e694fddced0fc5c3990daf944cdef69571c
Link:
https://www.unpac.me/results/af3caf99-1137-4a3f-b90d-d3aa8c149e25/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/55f1ae1de8b42e18d3a58fe05fcfa9abe7f6b65e49d44cf136af53c250111cb6

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
Create hunting rule
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 55f1ae1de8b42e18d3a58fe05fcfa9abe7f6b65e49d44cf136af53c250111cb6

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/207517/

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