strela | 506a0f63c640aa0702a286847553b02d9cda218ffb2ff1f38bc017247c49fcba

Analysis

max time kernel
142s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20230831-en
resource tags

arch:x64arch:x86image:win10v2004-20230831-enlocale:en-usos:windows10-2004-x64system
submitted
05/09/2023, 12:59

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General

Target
Strela.js
Size 3.9MB
Sample230905-p8ae9sff86
SHA256 506a0f63c640aa0702a286847553b02d9cda218ffb2ff1f38bc017247c49fcba
MD5 2c87dd2b3fc3d243a06bf947f4c7d7ac
SHA1 be2acdaee1128946a1eec5a449f8ed6f21e06759
SHA512 ae6daf7009ffdf429975cbeb9b4f539048ec9bad7e6184eeeeb39ee9ff04676f44df63a277515adb99b6a613f28f1f9a65e5390991f7f01b5adfaacfc1dc4b77
SSDEEP 24576:miLxXraB4Ze8MYp39KlgOS+j2SrM+2RpgGsIh0GYDDRV2GbnFEcmNIMHTXkE/71K:TLJne0zSzd2aU4Gl0lSXkEDblUbUW
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

strela stealer

Malware Config

Extracted

Family

strela

193.109.85.77

Signatures

Strela
An info stealer targeting mail credentials first seen in late 2022.
stealer strela

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4272677097-406801653-1594978504-1000\Control Panel\International\Geo\Nation	wscript.exe

Loads dropped DLL 1 IoCs

pid	Process
4720	regsvr32.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1408 wrote to memory of 3468	1408	wscript.exe	84
PID 1408 wrote to memory of 3468	1408	wscript.exe	84
PID 3468 wrote to memory of 848	3468	cmd.exe	89
PID 3468 wrote to memory of 848	3468	cmd.exe	89
PID 3468 wrote to memory of 2192	3468	cmd.exe	90
PID 3468 wrote to memory of 2192	3468	cmd.exe	90
PID 3468 wrote to memory of 4720	3468	cmd.exe	91
PID 3468 wrote to memory of 4720	3468	cmd.exe	91

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\Strela.js
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1408
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /k copy "C:\Users\Admin\AppData\Local\Temp\Strela.js" "C:\Users\Admin\AppData\Local\Temp\\fetchfrogs.bat" && "C:\Users\Admin\AppData\Local\Temp\\fetchfrogs.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3468
- - C:\Windows\system32\findstr.exe
    findstr /V fretfulbored ""C:\Users\Admin\AppData\Local\Temp\\fetchfrogs.bat""
    3⤵
    PID:848
- - C:\Windows\system32\certutil.exe
    certutil -f -decode bedroomsalty stationstep.dll
    3⤵
    PID:2192
- - C:\Windows\system32\regsvr32.exe
    regsvr32 stationstep.dll
    3⤵
    - Loads dropped DLL
    PID:4720

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

bedroomsalty

Path C:\Users\Admin\AppData\Local\Temp\bedroomsalty
Size 3.8MB
SHA256 6fe373e7dd6dd01950f617043c2f96cc0d1e10dcc9051d0db0f5641610098b0b
MD5 e8de3c21be4f6092503dba69d977a00c
SHA1 5c9a0e5a437f1555e2b636e24ae6c1e26255d8a6
SHA512 3b3ba1be0451e055a7684f346dedcad0f2b61e22f946a671f5aa37aebedd6e411b10eb1636154d4c75cec428db7aaf30f0a24b93a816a46aded837c2eedf52c7
SSDEEP 24576:hiLxXraB4Ze8MYp39KlgOS+j2SrM+2RpgGsIh0GYDDRV2GbnFEcmNIMHTXkE/71a:ALJne0zSzd2aU4Gl0lSXkEDbo
MD5 SHA1 SHA512 SSDEEP

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fetchfrogs.bat

Path C:\Users\Admin\AppData\Local\Temp\fetchfrogs.bat
Size 3.9MB
SHA256 506a0f63c640aa0702a286847553b02d9cda218ffb2ff1f38bc017247c49fcba
MD5 2c87dd2b3fc3d243a06bf947f4c7d7ac
SHA1 be2acdaee1128946a1eec5a449f8ed6f21e06759
SHA512 ae6daf7009ffdf429975cbeb9b4f539048ec9bad7e6184eeeeb39ee9ff04676f44df63a277515adb99b6a613f28f1f9a65e5390991f7f01b5adfaacfc1dc4b77
SSDEEP 24576:miLxXraB4Ze8MYp39KlgOS+j2SrM+2RpgGsIh0GYDDRV2GbnFEcmNIMHTXkE/71K:TLJne0zSzd2aU4Gl0lSXkEDblUbUW
MD5 SHA1 SHA512 SSDEEP

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fetchfrogs.bat

Path C:\Users\Admin\AppData\Local\Temp\fetchfrogs.bat
Size 3.9MB
SHA256 506a0f63c640aa0702a286847553b02d9cda218ffb2ff1f38bc017247c49fcba
MD5 2c87dd2b3fc3d243a06bf947f4c7d7ac
SHA1 be2acdaee1128946a1eec5a449f8ed6f21e06759
SHA512 ae6daf7009ffdf429975cbeb9b4f539048ec9bad7e6184eeeeb39ee9ff04676f44df63a277515adb99b6a613f28f1f9a65e5390991f7f01b5adfaacfc1dc4b77
SSDEEP 24576:miLxXraB4Ze8MYp39KlgOS+j2SrM+2RpgGsIh0GYDDRV2GbnFEcmNIMHTXkE/71K:TLJne0zSzd2aU4Gl0lSXkEDblUbUW
MD5 SHA1 SHA512 SSDEEP

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stationstep.dll

Path C:\Users\Admin\AppData\Local\Temp\stationstep.dll
Size 2.8MB
SHA256 f76a1cf204203e39633989fa428ab9c9b29a93276cc98c3df177d6aef34f0988
MD5 1ab0f628aa9c218d87af4a836ca48d28
SHA1 ba54f3344447217be60bfa62bfe7a610abb89091
SHA512 f723735d4cf16bc78596d529a2c951014306ba509da1a46393527f3a30222b718ac19fd93dd6e6274249722609fb784fa10d1cb4ff66e0c68682ab015196d0e7
SSDEEP 24576:msSF1CQy+edd54XiULy2yaGliO9ziH7RYtqP7cbhATn8Y9YdxR3TFPBM5nIGTC3S:mv1nwobRCXaiaUDcz
MD5 SHA1 SHA512 SSDEEP

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stationstep.dll

Path C:\Users\Admin\AppData\Local\Temp\stationstep.dll
Size 2.8MB
SHA256 f76a1cf204203e39633989fa428ab9c9b29a93276cc98c3df177d6aef34f0988
MD5 1ab0f628aa9c218d87af4a836ca48d28
SHA1 ba54f3344447217be60bfa62bfe7a610abb89091
SHA512 f723735d4cf16bc78596d529a2c951014306ba509da1a46393527f3a30222b718ac19fd93dd6e6274249722609fb784fa10d1cb4ff66e0c68682ab015196d0e7
SSDEEP 24576:msSF1CQy+edd54XiULy2yaGliO9ziH7RYtqP7cbhATn8Y9YdxR3TFPBM5nIGTC3S:mv1nwobRCXaiaUDcz
MD5 SHA1 SHA512 SSDEEP

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memory/4720-5647-0x0000000000FD0000-0x0000000000FF1000-memory.dmp

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memory/4720-5648-0x000000006D7C0000-0x000000006DA9E000-memory.dmp

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memory/4720-5649-0x0000000000FD0000-0x0000000000FF1000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads