MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 41d7f5806096ca6e6d92a5075595f1b11a23e3feffb4b6e8f2e74d78487e52d4. 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 2 File information Comments
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SHA256 hash: 41d7f5806096ca6e6d92a5075595f1b11a23e3feffb4b6e8f2e74d78487e52d4
SHA3-384 hash: 88caf180ccc4a973e3d0642a751b815cdc95589c063a0dad19a999041ca2f000c143f0fb569c70b3b9578245b0554eb6
SHA1 hash: 690887cdafc9a211936777f0bb5a673a5651a446
MD5 hash: 860f2621a0b6b1cd4349e698f88ad860
humanhash: pluto-texas-delaware-mockingbird
File name:documents.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:459'776 bytes
First seen:2022-04-21 22:18:13 UTC
Last seen:2022-04-21 22:28:47 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 6144:k2rQ57niXZrPZ0X5TaMsoaTP3UAh94l8EeyewHd13aA0MNO3JaxCF4A7vlxdtlC:oQJrxa5+Tnaew91KA5OZaxm5C
Threatray 15'461 similar samples on MalwareBazaar
TLSH T171A4CFA88E925183D6D96E71C483ECB13AB0B0D9895AF7EC7990CFB43FD6585D4013AC
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
Reporter GovCERT_CH
Tags:exe FormBook xloader

Intelligence

File Origin
# of uploads :
2
# of downloads :
327
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/265596/
Detection(s):
SecuriteInfo.com.Trojan.Inject4.30882.14924.751.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Creating a file
Searching for synchronization primitives
Launching cmd.exe command interpreter
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
fareit obfuscated packed virus
Link:
https://www.filescan.io/uploads/6261d856eab80a7a6c57c7a8/reports/35a20396-234e-468b-90f1-cd1d0561fe6b/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/9074f3e2-74f6-4a68-b6fa-bb8881e93393
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/981043
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains very large strings
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
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
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 dropped file
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: Suspicious Add Scheduled Task From User AppData Temp
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
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 613530 Sample: documents.exe Startdate: 22/04/2022 Architecture: WINDOWS Score: 100 37 www.unicorm.digital 2->37 39 www.nerohub.com 2->39 41 nerohub.com 2->41 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 14 other signatures 2->55 10 documents.exe 6 2->10         started        signatures3 process4 file5 31 C:\Users\user\AppData\Roaming\acFsIE.exe, PE32 10->31 dropped 33 C:\Users\user\AppData\Local\...\tmp932E.tmp, XML 10->33 dropped 35 C:\Users\user\AppData\...\documents.exe.log, ASCII 10->35 dropped 67 Uses schtasks.exe or at.exe to add and modify task schedules 10->67 69 Writes to foreign memory regions 10->69 71 Injects a PE file into a foreign processes 10->71 14 RegSvcs.exe 10->14         started        17 schtasks.exe 1 10->17         started        signatures6 process7 signatures8 73 Modifies the context of a thread in another process (thread injection) 14->73 75 Maps a DLL or memory area into another process 14->75 77 Sample uses process hollowing technique 14->77 79 2 other signatures 14->79 19 colorcpl.exe 14->19         started        22 explorer.exe 14->22 injected 25 conhost.exe 17->25         started        process9 dnsIp10 57 Modifies the context of a thread in another process (thread injection) 19->57 59 Maps a DLL or memory area into another process 19->59 61 Tries to detect virtualization through RDTSC time measurements 19->61 27 cmd.exe 1 19->27         started        43 www.document908070392.host 185.114.247.102, 49776, 80 TIMEWEB-ASRU Russian Federation 22->43 45 www.upgown.com 104.21.55.123, 49759, 80 CLOUDFLARENETUS United States 22->45 47 3 other IPs or domains 22->47 63 System process connects to network (likely due to code injection or exploit) 22->63 65 Performs DNS queries to domains with low reputation 22->65 signatures11 process12 process13 29 conhost.exe 27->29         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/41d7f5806096ca6e6d92a5075595f1b11a23e3feffb4b6e8f2e74d78487e52d4/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-04-21 21:51:17 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
23 of 26 (88.46%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ihl7ladas3fg43msuudvlfprwenchy76762ln2hs45gxqsd6klka._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
1a3d6220039a56a84858474245db02a8f5eb7b2e9a81db937c78cd799a89c4b2
Formbook
2385821f2732aafbdf3ddde31c314ddfaad694ad9261e4b40961b61a1a78cf64
Formbook
6b765d70d97e0b3d8da0d871555d9d284bd08e85034ad45447bde1aadd2b2878
Formbook
7f2f847bde8c4df56662677d1df9c413b2328786469a6065b6793ad90198e35d
Formbook
842a75ab92773e52741160c011f7265b489d57d82bdb8e1e6a5582b8852d8f3d
Formbook
95c6926c4af01e7a782b16967a66b3c349f24a6ab2393b1a20c47e28a1ad7249
Formbook
ece61a7e1773aa3be279569c92cbc8c326005d86965cc60ce37a283efe262b0e
Formbook
+ 15'451 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:3e9r loader rat suricata
Link:
https://tria.ge/reports/220421-18g1wsdddq/
Behaviour
Creates scheduled task(s)
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 WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
f3676ce5fdcf3c851834336dda7b38ad174644b0a794234a0f1d2e55512f7176
MD5 hash:
8bf113bc6b32cd9f8b2465345612f7c6
SHA1 hash:
7932224cfcf575bb73a586a4738cc0f2aeae86fd
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/87a72269-cbfd-411d-aa2a-9472b99c6b89/
Parent samples :
95c6926c4af01e7a782b16967a66b3c349f24a6ab2393b1a20c47e28a1ad7249
71da5f67c97d46f0a0a6b6fccb0629690ff520c23e54e6c67b17f35c97cbf09b
9896b6ae1f4e57311f78cdc7a0e984946b1509312d8b4bca22d8475bf68c6968
f74b69ddc37f4347e5dc0f89a10d81f8c3b28b0c72a45904206579b8490978b1
28ea165a38e4b7a0329fa0317161c9bfc25913b2596a55501e16ae5dc0424a78
cc86b6bbd5f6fc1caf1815dccac28f639f897c3990de4d6cdd89cf43a0575de5
842a75ab92773e52741160c011f7265b489d57d82bdb8e1e6a5582b8852d8f3d
147ee3f8e2d39a4c0e6214934f8d7992a9d83df379765bb3ac8a89e3de48b5a7
ebd95ef08b84741a475d48c8258616a4d003672767d9ddf0661aa81c4abe0164
ce67c3e68a5b20e66870295b65858ffa536f709df56b8fe9e2d454d33bc60447
41d7f5806096ca6e6d92a5075595f1b11a23e3feffb4b6e8f2e74d78487e52d4
9bfa0f51aa92cffd6400c97ac2857d1c49087ba5a8ce9d112f8ee5921d714106
7098502e58a79170ccc66df0965c0e3f948629b42591d94f3d62963c86507044
2d79a5c2368aba8773c00aa3dcfaa0eaf9fe2f80f15bdda080abeb4988940e1b
e824248a3ce93366cb2102c20dc1676924a97dd460b26bdfb3a37ab99620e720
c9ae0452a8991f36ffa96fc5feb054fd33c04cc77c58113eb8bd69adc50fb539
7317d35bb354782e5f24ddb2b614e5ca89a15f174936aa6ec268663aecab9830
1772bfee084065da2d8e99c4a0a064ea9e03fdf8ce787e3b7b1963753d8826d2
77a001f7d410c04d71c229ad7c3c07fc7a9a50943c0a7adcd080a0c93d2abaa9
0157b0a6c0681b2980c75d5942bdc49263afa260223d4cfa1246eeb26d85fbb6
f11b64aebcf22ad61d091223517bb34a45726674691ec02bf36ca36b6de83df9
394c2420ddab4655b1045c1decd4a5004f2686659ac584223fd45767fee04db4
5c81d965df72cd6e5a0d26766972e0a84a9aef4015f637e7b3f883479bf102d4
db6023b35fda173c326a7e6c31a22bce48a0d5f490f2d4dc22f16655dda391e6
db14083a32d3bab9c85a1c803b76df2d282f466efad59fdf26fa065969b20543
edb261a6d543c24ad373892c3106b84902ae2d041a149409b8f6d02b4294c3c8
c49e10b71164cb28229f08fba45ab506ac10af747eaedd013f66769afdfa1f44
SH256 hash:
79823e47436e129def4fba8ee225347a05b7bb27477fb1cc8be6dc9e9ce75696
MD5 hash:
39f524c1ab0eb76dfd79b2852e5e8c39
SHA1 hash:
428018e1701006744e34480b0029982a76d8a57d
Link:
https://www.unpac.me/results/87a72269-cbfd-411d-aa2a-9472b99c6b89/
SH256 hash:
494d7b5fbec4da3e5f453a6daa15b453f324f1339fb35209844959e79fe6a958
MD5 hash:
b24f95aad84cca1fc3fb63c14d8235ed
SHA1 hash:
28d566351e5cf4f543b90f2a3ea9d9ecd6d73e23
Link:
https://www.unpac.me/results/87a72269-cbfd-411d-aa2a-9472b99c6b89/
SH256 hash:
41d7f5806096ca6e6d92a5075595f1b11a23e3feffb4b6e8f2e74d78487e52d4
MD5 hash:
860f2621a0b6b1cd4349e698f88ad860
SHA1 hash:
690887cdafc9a211936777f0bb5a673a5651a446
Link:
https://www.unpac.me/results/87a72269-cbfd-411d-aa2a-9472b99c6b89/
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/41d7f5806096ca6e6d92a5075595f1b11a23e3feffb4b6e8f2e74d78487e52d4

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: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 41d7f5806096ca6e6d92a5075595f1b11a23e3feffb4b6e8f2e74d78487e52d4

(this sample)

  
Dropped by
xloader
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/265596/

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