MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 cfdb27a9ff39bd1aa5a0a43fe6e272c269a311f5748d8a13b2e705f7d66f16bd. 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
| SHA256 hash: | cfdb27a9ff39bd1aa5a0a43fe6e272c269a311f5748d8a13b2e705f7d66f16bd |
|---|---|
| SHA3-384 hash: | 53eaf7ce06569b56dca16b6a8d0466d23ac705e6211620088ea8cb4954528a50077553d598249e9bfbc00ca943616e81 |
| SHA1 hash: | 1179a7916f59fa2d88829a56f3f045e1cf32c418 |
| MD5 hash: | 4196c697fa8a52ecddad63bf5ac9e8f9 |
| humanhash: | xray-colorado-foxtrot-quebec |
| File name: | arrival notice.exe |
| Download: | download sample |
| Signature | Formbook |
| File size: | 780'288 bytes |
| First seen: | 2021-09-15 06:26:19 UTC |
| Last seen: | 2021-09-15 13:43:48 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'741 x AgentTesla, 19'606 x Formbook, 12'242 x SnakeKeylogger) |
| ssdeep | 6144:bThvfD5lQDbCMN4K4CwdAbOo3kUnVVorbcLuKUCHWGyGSL5w2P3g6zsGJO5SVkGw:PWHCM2K4CLAOwb+uxvDfvrso6SE+7k |
| Threatray | 9'290 similar samples on MalwareBazaar |
| TLSH | T149F4376077A70055F8229B7579A7ECF6A55BBF662E21A41A10D13F0737336C2CEC182E |
| dhash icon | 7e4c611705595900 (2 x AgentTesla, 1 x Formbook) |
| Reporter |  GovCERT_CH |
| Tags: | exe FormBook |
Intelligence
File Origin
# of uploads :
5
# of downloads :
215
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Detection(s):
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Launching a process
Creating a file in the %temp% directory
Delayed writing of the file
Verdict:
Suspicious
Threat level:
5/10
Confidence:
100%
Tags:
obfuscated packed
Malware family:
Formbook
Verdict:
Malicious
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
C2 URLs / IPs found in malware configuration
Found malware configuration
Initial sample is a PE file and has a suspicious name
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)
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
Sigma detected: CMSTP Execution Process Creation
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:
Detection:
formbook
Threat name:
ByteCode-MSIL.Trojan.Pwsx
Status:
Malicious
First seen:
2021-09-15 02:16:42 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
11 of 43 (25.58%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
formbook
Similar samples:
+ 9'280 additional samples on MalwareBazaar
Result
Malware family:
xloader
Score:
10/10
Tags:
family:xloader campaign:n58i loader rat suricata
Behaviour
Gathers network information
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 UnmapMainImage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Blocklisted process makes network request
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.nordicbatterybelt.net/n58i/
Unpacked files
SH256 hash:
6c13cdc5d4408ccd7c0c31a6565a6e1458db6b967b1b4c604aa08a0c82d4ecb1
MD5 hash:
d9260295cce263a3073f916ebca034ae
SHA1 hash:
7cecebd83e8243080168ac5e6e784780a2b9e1c1
Detections:
win_formbook_g0
win_formbook_auto
Parent samples :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 hash:
aa52b8a100f424896ede1b2ee5b363181a08232527af89e765b283bf479a5619
MD5 hash:
c3efa7201f681e79e1d6037e1fe537ff
SHA1 hash:
be5955c3ed4cbd26da03a5257909e1314bb6e8ef
SH256 hash:
ad4a7895d529d5164302bb88596964ab42ff125bf0f5544418c80b6d438cb587
MD5 hash:
43ababb6b0a02907aad43084f12b10d9
SHA1 hash:
b60ba705891d5a666d64300181b475a46714ffa8
SH256 hash:
cfdb27a9ff39bd1aa5a0a43fe6e272c269a311f5748d8a13b2e705f7d66f16bd
MD5 hash:
4196c697fa8a52ecddad63bf5ac9e8f9
SHA1 hash:
1179a7916f59fa2d88829a56f3f045e1cf32c418
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.81
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: | INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture |
|---|---|
| Author: | ditekSHen |
| Description: | Detect executables with stomped PE compilation timestamp that is greater than local current time |
| Rule name: | pe_imphash |
|---|
| Rule name: | pe_imphash |
|---|
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| 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
Delivery method
Distributed via e-mail attachment
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