strela | ae1c457e4968758551c0e99ce62cb87c02b6c134afda6d1d700da3b37a2d7610

Analysis

max time kernel
120s
max time network
130s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
28-07-2024 22:51

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General

Target

CB_setup.exe
Size

21.4MB
MD5

193642adb57aec509ba3fd698a09efd2
SHA1

d9166b6ac1c069f028188357ff40256d7395868c
SHA256

ae1c457e4968758551c0e99ce62cb87c02b6c134afda6d1d700da3b37a2d7610
SHA512

507c9698f6d9b2def0f60641b5eeef5a13a55f0a492af62abae7345b9b01d3cef490a689ff98fe899b2188cb4d3d74b1a655dccf370f31d01ca7fbca2041bc5e
SSDEEP

393216:Es5Q1AuX1FFetKFOfzJyb2omyUw7RLo4WRsyo1fL79UXPj5MXHQqkJGlF:Es52AuXHQagzJk+yUwBo5oHUXPFkQ3K

Score

10^/10

strela discovery stealer

Malware Config

Signatures

Detects Strela Stealer payload 2 IoCs

resource	yara_rule
behavioral1/files/0x00050000000195cc-67.dat	family_strela
behavioral1/memory/2280-68-0x0000000005360000-0x000000000592D000-memory.dmp	family_strela

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

Loads dropped DLL 9 IoCs

pid	Process
2280	CB_setup.exe
2280	CB_setup.exe
2280	CB_setup.exe
2280	CB_setup.exe
2280	CB_setup.exe
2280	CB_setup.exe
2280	CB_setup.exe
2280	CB_setup.exe
2280	CB_setup.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\gdiplus.dll	CB_setup.exe
File created	C:\Windows\SysWOW64\msvcr71.dll	CB_setup.exe
File created	C:\Windows\SysWOW64\mfc71.dll	CB_setup.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	CB_setup.exe

Modifies system certificate store 2 TTPs 3 IoCs

evasion spyware trojan

Install Root Certificate

T1553.004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349	CB_setup.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	CB_setup.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	CB_setup.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2280	CB_setup.exe
2280	CB_setup.exe
2280	CB_setup.exe

C:\Users\Admin\AppData\Local\Temp\CB_setup.exe
"C:\Users\Admin\AppData\Local\Temp\CB_setup.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies system certificate store
- Suspicious use of SetWindowsHookEx
PID:2280

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Subvert Trust Controls

T1553

Install Root Certificate

T1553.004

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\CabB84C.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\TarBB6B.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\Temp\version_free.ini

Filesize
15KB

MD5
80bc7fa432a388ae762c0448abfaf3f1

SHA1
f268dd816fb9a102b49389420ab7f80b4ac44f8a

SHA256
69efb45ca18fe1c109e6a24ff4f8c5e0a17ff8b5e196710046bdd0d4917e25f0

SHA512
adcab8a19d205919aa13a226b45d8e64e0964bff9a7925730f66c37437411cc6573298574b27d4330224987fc23d74b2a000845e370a28d15fe920f8b6304bd4

Download Submit
\Users\Admin\AppData\Local\Temp\nsd9C41.tmp\Banner.dll

Filesize
3KB

MD5
4a90d392c9da5f0b90a75baf67c37e4c

SHA1
73e875dafefaa16def7f77a428a5c131b7b9837e

SHA256
045bd54299e1cf2d9e68f64e233f30c8a2c455d72645d4a4a9ca8874a7c510ac

SHA512
82014b8fb94da3d158ef68a2488eb594bcf27d31132b4bbf2f4c441d00ed9d374d78cd013a1af6c59fd03716bf5c429cddf77c43e1e171df24086b70b7b9a13d

Download Submit
\Users\Admin\AppData\Local\Temp\nsd9C41.tmp\MyLangDLLS3.dll

Filesize
5KB

MD5
7050cd061f2ddac010e3382a57d5ede4

SHA1
a0a1e5e89fb230dfa3c76ee15b0e51abead32282

SHA256
dfca83b19ee2fe36479e9c1ceef2eb45b08851236dcf7a958141b1af03d27a21

SHA512
5f8472dd37a1cc1aecad78610b71670989715a15f8911e658ce7da4c4b2d428f866c9e61df30f6660d91dd365b1c055676ef3a3f6ec77d826ef11175a713455e

Download Submit
\Users\Admin\AppData\Local\Temp\nsd9C41.tmp\NSIS_SkinCrafter_Plugin.dll

Filesize
5.8MB

MD5
2e13e03b7cf2d8c8338bbc3d29fd3e07

SHA1
173e6e67c5315474765dcd303b3214d5600c48ea

SHA256
ea1552de423ed1768bace344d9a07bf529845c75fe6fc6ce3c4ba91d4aae5409

SHA512
94220a07aea2f4a45ef6b7566baba5a9ce73e70236bf97fc2489bee50b662f3fd05824d7804dd544eef85d73e69091aaae5de3094f0866bf51521024eb3d168d

Download Submit
\Users\Admin\AppData\Local\Temp\nsd9C41.tmp\Plugin.dll

Filesize
2.1MB

MD5
67ad13de4800015f22cffaa96e1cdd41

SHA1
542fb5baeea3f3b7ebdc70061790612ae9bfd0dc

SHA256
ea847b3e559321f8825d4339ad503b8082546ad7f9ae1d8373914f2ffaf3e6a2

SHA512
c2f776d6b4091dcc241ca25d3d1134f7487f6ffd1e58b6108d3dae655cdb949c3ded8a03a952ec33947c61cb0213fde25b79992ca86327e380f30140a881a79b

Download Submit
\Users\Admin\AppData\Local\Temp\nsd9C41.tmp\SkinCrafter.dll

Filesize
792KB

MD5
8fea8fd177034b52e6a5886fb5e780bd

SHA1
99f511388a2420d53b8406baed48ba550842eaad

SHA256
546dddc7a31609b5bc3dc8ecef6f6782b77613853c54171fc32314c08a69e8de

SHA512
5d82a3b9cf9d69049e6278a6d835b8a9a386c97ae9a69cf658675b0a8751a344d0da1ee704e9bb9023dab7cd77fdca684bdc90837960b583eef0bb4324498696

Download Submit
\Users\Admin\AppData\Local\Temp\nsd9C41.tmp\System.dll

Filesize
11KB

MD5
959ea64598b9a3e494c00e8fa793be7e

SHA1
40f284a3b92c2f04b1038def79579d4b3d066ee0

SHA256
03cd57ab00236c753e7ddeee8ee1c10839ace7c426769982365531042e1f6f8b

SHA512
5e765e090f712beffce40c5264674f430b08719940d66e3a4d4a516fd4ade859f7853f614d9d6bbb602780de54e11110d66dbb0f9ca20ef6096ede531f9f6d64

Download Submit
\Users\Admin\AppData\Local\Temp\nsd9C41.tmp\UserInfo.dll

Filesize
4KB

MD5
d16e06c5de8fb8213a0464568ed9852f

SHA1
d063690dc0d2c824f714acb5c4bcede3aa193f03

SHA256
728472ba312ae8af7f30d758ab473e0772477a68fcd1d2d547dafe6d8800d531

SHA512
60502bb65d91a1a895f38bd0f070738152af58ffa4ac80bac3954aa8aad9fda9666e773988cbd00ce4741d2454bf5f2e0474ce8ea18cfe863ec4c36d09d1e27a

Download Submit
\Windows\SysWOW64\mfc71.dll

Filesize
1.0MB

MD5
1fd3f9722119bdf7b8cff0ecd1e84ea6

SHA1
9a4faa258b375e173feaca91a8bd920baf1091eb

SHA256
385ea2a454172e3f9b1b18778d4d29318a12be9f0c0c0602db72e2cce136e823

SHA512
109d7a80a5b10548200d05ab3d7deb9dc2ae8e40d84b468184895eb462211078ecdcb11f01eb50c91c65a924f8e592cd63b78e402dcaea144ff89c11f2ab07d6

Download Submit
\Windows\SysWOW64\msvcr71.dll

Filesize
340KB

MD5
ca2f560921b7b8be1cf555a5a18d54c3

SHA1
432dbcf54b6f1142058b413a9d52668a2bde011d

SHA256
c4d4339df314a27ff75a38967b7569d9962337b8d4cd4b0db3aba5ff72b2bfbb

SHA512
23e0bdd9458a5a8e0f9bbcb7f6ce4f87fcc9e47c1ee15f964c17ff9fe8d0f82dd3a0f90263daaf1ee87fad4a238aa0ee92a16b3e2c67f47c84d575768edba43e

Download Submit
memory/2280-68-0x0000000005360000-0x000000000592D000-memory.dmp

Filesize
5.8MB

Download
memory/2280-76-0x0000000005260000-0x000000000532C000-memory.dmp

Filesize
816KB

Download