MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 1bcb33eed3dc2a21fba05a84a06d63d2313c4b69e0eb6db6e781ffa7a7732b03. 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: 11
| SHA256 hash: | 1bcb33eed3dc2a21fba05a84a06d63d2313c4b69e0eb6db6e781ffa7a7732b03 |
|---|---|
| SHA3-384 hash: | 26ba0f04381f8e17fc2e399381b4305af52a03ceb58c815893b3185c72ddd28604407d3a0ea89830b273637c9761bfd6 |
| SHA1 hash: | 4b9f4e1aeca94984f57767be2d8c32d62b8907c6 |
| MD5 hash: | ea9dac7924879bf7102464b3095e81bc |
| humanhash: | arkansas-wolfram-zulu-seven |
| File name: | jsc_PI.exe |
| Download: | download sample |
| Signature | Formbook |
| File size: | 697'856 bytes |
| First seen: | 2021-06-30 11:09:36 UTC |
| Last seen: | 2021-06-30 13:49:42 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'473 x Formbook, 12'208 x SnakeKeylogger) |
| ssdeep | 12288:P4W2vwGBbX5Tyg1Ve6d31WrYQtULq/7nrTvDBzjq6a:P4W2vbX+6d38rYQtxjrxzj |
| Threatray | 6'057 similar samples on MalwareBazaar |
| TLSH | 0CE47D311BA95A36E0BA9FBDD5A1208197FDF6236F03D85C78B511C50712E83C9F262E |
| Reporter |  DFNCERT |
| Tags: | exe FormBook xloader |
Intelligence
File Origin
# of uploads :
3
# of downloads :
153
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
jsc_PI.exe
Verdict:
Suspicious activity
Analysis date:
2021-06-30 10:52:52 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
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
Verdict:
Malicious
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
.NET source code contains very large strings
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 submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
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.FormBook
Status:
Malicious
First seen:
2021-06-30 09:05:43 UTC
File Type:
PE (.Net Exe)
Extracted files:
11
AV detection:
17 of 29 (58.62%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
formbook
Similar samples:
+ 6'047 additional samples on MalwareBazaar
Result
Malware family:
xloader
Score:
10/10
Tags:
family:xloader loader rat
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
Deletes itself
Xloader Payload
Xloader
Malware Config
C2 Extraction:
http://www.kalptarucentrino.com/owws/
Unpacked files
SH256 hash:
e1d7326180a824acdf35dbd16cbd2046d51363b4a5676aaab0c6f08a05c2f946
MD5 hash:
6049060d76baafa23b8b0afc17b8792a
SHA1 hash:
969734dcff15739eca656c2f8a3f567ddf4ed28a
Detections:
win_formbook_g0
win_formbook_auto
SH256 hash:
1c5e0a0d909d1da24af87967a1e154c8aa490a1f99c6624e7214d20eb84f4fec
MD5 hash:
81faf15c7e3c9446d906659f7c7a9f16
SHA1 hash:
d7e05a22b109ce608109dc509029a7fe22b4b8bf
SH256 hash:
189da08e18dff70bc94710963ac9785c05a46b4cffd851f73e61cdc410522f95
MD5 hash:
b1de01a255689304a03773dc324b0197
SHA1 hash:
2aaeda36efb57594d66dcc1015c57cb7f504379b
SH256 hash:
1bcb33eed3dc2a21fba05a84a06d63d2313c4b69e0eb6db6e781ffa7a7732b03
MD5 hash:
ea9dac7924879bf7102464b3095e81bc
SHA1 hash:
4b9f4e1aeca94984f57767be2d8c32d62b8907c6
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.95
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: | Formbook |
|---|---|
| Author: | JPCERT/CC Incident Response Group |
| Description: | detect Formbook in memory |
| Reference: | internal research |
| Rule name: | INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu |
|---|---|
| Author: | ditekSHen |
| Description: | Detect executables with stomped PE compilation timestamp that is greater than local current time |
| Rule name: | pe_imphash |
|---|
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
| Rule name: | win_formbook_auto |
|---|---|
| Author: | Felix Bilstein - yara-signator at cocacoding dot com |
| Description: | autogenerated rule brought to you by yara-signator |
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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