stealc | 8a6fcbbaeba40a7708df130f0537981cf3e5a0e812afcb3ebc46a319d3abe0ae

General

Target

8a6fcbbaeba40a7708df130f0537981cf3e5a0e812afcb3ebc46a319d3abe0ae.exe
Size

1.8MB
MD5

12f7cf374e153af525a37e7157e11c10
SHA1

3231c4dc99f5d72ec6c0fc4af94e47384ddda8d3
SHA256

8a6fcbbaeba40a7708df130f0537981cf3e5a0e812afcb3ebc46a319d3abe0ae
SHA512

f3a48045330be8ac9b3b5e591d4037de4401463840df33a75bd30f6ce39d9f86f4ec691a97241efc01edf54ccd2db0983319f390a614efab76bace8941f0b01e
SSDEEP

24576:FBfuZfeq6sxO6hTdtTF+TxMoxQH1Tj4wtjYZH1DmoYYzi3WH45yv+OueSJhm9e:F7qFbJtTF+TxMoxc1TU+j+dAzGwlrh

Score

10^/10

stealc vidar discovery spyware stealer

Malware Config

Extracted

Family

stealc

rc4.plain

Signatures

Detect Vidar Stealer 10 IoCs

stealer

Processes:

resource	yara_rule
behavioral1/memory/2956-2-0x00000000032B0000-0x00000000033F9000-memory.dmp	family_vidar_v7
behavioral1/memory/1624-17-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/1624-21-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/1624-23-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/1624-18-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/1624-15-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/1624-157-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/1624-176-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/1624-211-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7
behavioral1/memory/1624-230-0x0000000000400000-0x0000000000646000-memory.dmp	family_vidar_v7

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Vidar
Vidar is an infostealer based on Arkei stealer.
stealer vidar
Downloads MZ/PE file
Executes dropped EXE 1 IoCs

Processes:

kat2868.tmp

pid process

1624 kat2868.tmp

Loads dropped DLL 2 IoCs

Processes:

8a6fcbbaeba40a7708df130f0537981cf3e5a0e812afcb3ebc46a319d3abe0ae.exe

pid	process
2956	8a6fcbbaeba40a7708df130f0537981cf3e5a0e812afcb3ebc46a319d3abe0ae.exe
2956	8a6fcbbaeba40a7708df130f0537981cf3e5a0e812afcb3ebc46a319d3abe0ae.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Suspicious use of SetThreadContext 1 IoCs

Processes:

8a6fcbbaeba40a7708df130f0537981cf3e5a0e812afcb3ebc46a319d3abe0ae.exe

description	pid	process	target process
PID 2956 set thread context of 1624	2956	8a6fcbbaeba40a7708df130f0537981cf3e5a0e812afcb3ebc46a319d3abe0ae.exe	kat2868.tmp

Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.

Query Registry
T1012

System Information Discovery
T1082

Processes:

kat2868.tmp

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString kat2868.tmp

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	kat2868.tmp

Modifies system certificate store 2 TTPs 3 IoCs

evasion spyware trojan

Install Root Certificate

T1553.004

Modify Registry

T1112

Processes:

kat2868.tmp

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25	kat2868.tmp
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25\Blob = 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	kat2868.tmp
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\5FB7EE0633E259DBAD0C4C9AE6D38F1A61C7DC25\Blob = 190000000100000010000000ba4f3972e7aed9dccdc210db59da13c90300000001000000140000005fb7ee0633e259dbad0c4c9ae6d38f1a61c7dc251d00000001000000100000008f76b981d528ad4770088245e2031b630b0000000100000012000000440069006700690043006500720074000000140000000100000014000000b13ec36903f8bf4701d498261a0802ef63642bc35300000001000000230000003021301f06096086480186fd6c020130123010060a2b0601040182373c0101030200c0090000000100000034000000303206082b0601050507030106082b0601050507030206082b0601050507030406082b0601050507030306082b060105050703080f0000000100000014000000e35ef08d884f0a0ade2f75e96301ce6230f213a82000000001000000c9030000308203c5308202ada003020102021002ac5c266a0b409b8f0b79f2ae462577300d06092a864886f70d0101050500306c310b300906035504061302555331153013060355040a130c446967694365727420496e6331193017060355040b13107777772e64696769636572742e636f6d312b30290603550403132244696769436572742048696768204173737572616e636520455620526f6f74204341301e170d3036313131303030303030305a170d3331313131303030303030305a306c310b300906035504061302555331153013060355040a130c446967694365727420496e6331193017060355040b13107777772e64696769636572742e636f6d312b30290603550403132244696769436572742048696768204173737572616e636520455620526f6f7420434130820122300d06092a864886f70d01010105000382010f003082010a0282010100c6cce573e6fbd4bbe52d2d32a6dfe5813fc9cd2549b6712ac3d5943467a20a1cb05f69a640b1c4b7b28fd098a4a941593ad3dc94d63cdb7438a44acc4d2582f74aa5531238eef3496d71917e63b6aba65fc3a484f84f6251bef8c5ecdb3892e306e508910cc4284155fbcb5a89157e71e835bf4d72093dbe3a38505b77311b8db3c724459aa7ac6d00145a04b7ba13eb510a984141224e656187814150a6795c89de194a57d52ee65d1c532c7e98cd1a0616a46873d03404135ca171d35a7c55db5e64e13787305604e511b4298012f1793988a202117c2766b788b778f2ca0aa838ab0a64c2bf665d9584c1a1251e875d1a500b2012cc41bb6e0b5138b84bcb0203010001a3633061300e0603551d0f0101ff040403020186300f0603551d130101ff040530030101ff301d0603551d0e04160414b13ec36903f8bf4701d498261a0802ef63642bc3301f0603551d23041830168014b13ec36903f8bf4701d498261a0802ef63642bc3300d06092a864886f70d010105050003820101001c1a0697dcd79c9f3c886606085721db2147f82a67aabf183276401057c18af37ad911658e35fa9efc45b59ed94c314bb891e8432c8eb378cedbe3537971d6e5219401da55879a2464f68a66ccde9c37cda834b1699b23c89e78222b7043e35547316119ef58c5852f4e30f6a0311623c8e7e2651633cbbf1a1ba03df8ca5e8b318b6008892d0c065c52b7c4f90a98d1155f9f12be7c366338bd44a47fe4262b0ac497690de98ce2c01057b8c876129155f24869d8bc2a025b0f44d42031dbf4ba70265d90609ebc4b17092fb4cb1e4368c90727c1d25cf7ea21b968129c3c9cbf9efc805c9b63cdec47aa252767a037f300827d54d7a9f8e92e13a377e81f4a	kat2868.tmp

Suspicious behavior: EnumeratesProcesses 15 IoCs

Processes:

kat2868.tmp

pid	process
1624	kat2868.tmp
1624	kat2868.tmp
1624	kat2868.tmp
1624	kat2868.tmp
1624	kat2868.tmp
1624	kat2868.tmp
1624	kat2868.tmp
1624	kat2868.tmp
1624	kat2868.tmp
1624	kat2868.tmp
1624	kat2868.tmp
1624	kat2868.tmp
1624	kat2868.tmp
1624	kat2868.tmp
1624	kat2868.tmp

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

8a6fcbbaeba40a7708df130f0537981cf3e5a0e812afcb3ebc46a319d3abe0ae.exe

description	pid	process	target process
PID 2956 wrote to memory of 1624	2956	8a6fcbbaeba40a7708df130f0537981cf3e5a0e812afcb3ebc46a319d3abe0ae.exe	kat2868.tmp
PID 2956 wrote to memory of 1624	2956	8a6fcbbaeba40a7708df130f0537981cf3e5a0e812afcb3ebc46a319d3abe0ae.exe	kat2868.tmp
PID 2956 wrote to memory of 1624	2956	8a6fcbbaeba40a7708df130f0537981cf3e5a0e812afcb3ebc46a319d3abe0ae.exe	kat2868.tmp
PID 2956 wrote to memory of 1624	2956	8a6fcbbaeba40a7708df130f0537981cf3e5a0e812afcb3ebc46a319d3abe0ae.exe	kat2868.tmp
PID 2956 wrote to memory of 1624	2956	8a6fcbbaeba40a7708df130f0537981cf3e5a0e812afcb3ebc46a319d3abe0ae.exe	kat2868.tmp
PID 2956 wrote to memory of 1624	2956	8a6fcbbaeba40a7708df130f0537981cf3e5a0e812afcb3ebc46a319d3abe0ae.exe	kat2868.tmp
PID 2956 wrote to memory of 1624	2956	8a6fcbbaeba40a7708df130f0537981cf3e5a0e812afcb3ebc46a319d3abe0ae.exe	kat2868.tmp
PID 2956 wrote to memory of 1624	2956	8a6fcbbaeba40a7708df130f0537981cf3e5a0e812afcb3ebc46a319d3abe0ae.exe	kat2868.tmp
PID 2956 wrote to memory of 1624	2956	8a6fcbbaeba40a7708df130f0537981cf3e5a0e812afcb3ebc46a319d3abe0ae.exe	kat2868.tmp

C:\Users\Admin\AppData\Local\Temp\8a6fcbbaeba40a7708df130f0537981cf3e5a0e812afcb3ebc46a319d3abe0ae.exe
"C:\Users\Admin\AppData\Local\Temp\8a6fcbbaeba40a7708df130f0537981cf3e5a0e812afcb3ebc46a319d3abe0ae.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2956

C:\Users\Admin\AppData\Local\Temp\kat2868.tmp
C:\Users\Admin\AppData\Local\Temp\kat2868.tmp
2⤵
- Executes dropped EXE
- Checks processor information in registry
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
PID:1624

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Subvert Trust Controls

1

T1553

Install Root Certificate

1

T1553.004

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

2

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
344B

MD5
8c8bed6c1001d615c02da4d57b867373

SHA1
44046b3c1d350032e4c201730afb8d9a6e84e264

SHA256
402e27d5741f217a47b5f3f9630b77d577c3c49141e82c786799120adb393701

SHA512
9930002b73ac38732eae78d1ff5c903d88658c3b81c335934f52dfdb69ed13f48c0080f5beb74a45f636601b7255d07c7f978489a63bd85d5bc4ba0f49d2cf8e

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab2CBD.tmp

Filesize
68KB

MD5
29f65ba8e88c063813cc50a4ea544e93

SHA1
05a7040d5c127e68c25d81cc51271ffb8bef3568

SHA256
1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

SHA512
e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar2CD0.tmp

Filesize
177KB

MD5
435a9ac180383f9fa094131b173a2f7b

SHA1
76944ea657a9db94f9a4bef38f88c46ed4166983

SHA256
67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

SHA512
1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

Download Submit
\Users\Admin\AppData\Local\Temp\kat2868.tmp

Filesize
861KB

MD5
66064dbdb70a5eb15ebf3bf65aba254b

SHA1
0284fd320f99f62aca800fb1251eff4c31ec4ed7

SHA256
6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

SHA512
b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

Download Submit
memory/1624-11-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1624-9-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1624-230-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1624-18-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1624-15-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1624-13-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1624-211-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1624-23-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1624-21-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1624-17-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1624-196-0x000000001E190000-0x000000001E3EF000-memory.dmp

Filesize
2.4MB

Download
memory/1624-157-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/1624-176-0x0000000000400000-0x0000000000646000-memory.dmp

Filesize
2.3MB

Download
memory/2956-2-0x00000000032B0000-0x00000000033F9000-memory.dmp

Filesize
1.3MB

Download
memory/2956-0-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/2956-22-0x0000000000400000-0x00000000005D1000-memory.dmp

Filesize
1.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads