strela | 7a9c0e726aa4db17aeec45f63425219a098756dc6a434c084853c98e3d4ec9eb

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
27-09-2024 09:50

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General

Target

fa2f3ffb34db747f9e0f71db54366828_JaffaCakes118.exe
Size

8.8MB
MD5

fa2f3ffb34db747f9e0f71db54366828
SHA1

bce3c4f26fe9620689bd789eb289bddb95b13c07
SHA256

7a9c0e726aa4db17aeec45f63425219a098756dc6a434c084853c98e3d4ec9eb
SHA512

44d22f63e5d8bea4411da3d3f224fc468b798032b967ac73ec38cdb14bd6f5bab7014b2e82aad442cba302b60b5f18e1df3d1f49c54c60dee44c5e4dee6d7dde
SSDEEP

196608:64wb69bPe3Fd+FPhQVjFA7t2RHfYlQZJgTamGcBiG:64AqL7h6AWHf3A

Score

10^/10

strela discovery stealer

Malware Config

Signatures

Detects Strela Stealer payload 2 IoCs

resource	yara_rule
behavioral1/files/0x0009000000016db5-2.dat	family_strela
behavioral1/files/0x0007000000016edb-17.dat	family_strela

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

Drops file in System32 directory 3 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
2688	Au_.exe

Loads dropped DLL 8 IoCs

pid	Process
1732	fa2f3ffb34db747f9e0f71db54366828_JaffaCakes118.exe
2688	Au_.exe
2688	Au_.exe
2688	Au_.exe
2688	Au_.exe
2688	Au_.exe
2688	Au_.exe
2688	Au_.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 2 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	Au_.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fa2f3ffb34db747f9e0f71db54366828_JaffaCakes118.exe

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral1/files/0x0009000000016db5-2.dat	nsis_installer_1
behavioral1/files/0x0009000000016db5-2.dat	nsis_installer_2

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2688	Au_.exe
2688	Au_.exe
2688	Au_.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1732 wrote to memory of 2688	1732	fa2f3ffb34db747f9e0f71db54366828_JaffaCakes118.exe	30
PID 1732 wrote to memory of 2688	1732	fa2f3ffb34db747f9e0f71db54366828_JaffaCakes118.exe	30
PID 1732 wrote to memory of 2688	1732	fa2f3ffb34db747f9e0f71db54366828_JaffaCakes118.exe	30
PID 1732 wrote to memory of 2688	1732	fa2f3ffb34db747f9e0f71db54366828_JaffaCakes118.exe	30

C:\Users\Admin\AppData\Local\Temp\fa2f3ffb34db747f9e0f71db54366828_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fa2f3ffb34db747f9e0f71db54366828_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1732
- C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Au_.exe
  "C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Au_.exe" _?=C:\Users\Admin\AppData\Local\Temp\
  2⤵
  - Drops file in System32 directory
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2688

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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\nsyB433.tmp\ConfirmUninstallPage.ini

Filesize
740B

MD5
cb5adee102268bf91bcca637afbc1ffd

SHA1
1c7d905eeade0510d350206f6ff32a2c8920b58d

SHA256
53c0db610c388ccd7931147c292e0069540300f9655b9ad387290ea105904304

SHA512
c9744423ba37ad8a727b3b351d95585ba63941349c641aaa5b61eeacc71743a56c9c93ecb3208fe926798d6577b877eabe0fb5538c516e95a4de97ffdaefe7da

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsyB433.tmp\ConfirmUninstallPage.ini

Filesize
660B

MD5
9394cd17f501b9abda76c34a84ff7398

SHA1
5fabd3d206521108e565fb5dd6672cd1bb2f068e

SHA256
bbcb8b1a2f296cbcb5d18291d917032f0a6224c5db6e44d36f4f90c65d7e0f0c

SHA512
0c16eb6af06e807dfd0c0faa9d87d69824dabd9b8dab1a9e0e5db5b262b903485ce3ea7b19e832b0a6cf19dd3ca9bf8f07716df2b33e4fdbd69ba7374569f450

Download Submit
\Users\Admin\AppData\Local\Temp\nsyB433.tmp\IceDragonPlugin.dll

Filesize
2.1MB

MD5
0f5f24058e46a85d65f35d856e063ddb

SHA1
5dbefd4a5705c9edaa85c930b297929fd9abb2ba

SHA256
e01e1e6d73392a90973e60d384c88855de05f8024c76ab1a94229a87191f2029

SHA512
636653a1a98715d58b8b7a1be917dc470f9c660f75710908cb3caa9c03d2a9b5b3bc6fa0514a28d18873df39aa18151417bdb55e0e655ee21fb1595cf6a9830d

Download Submit
\Users\Admin\AppData\Local\Temp\nsyB433.tmp\InstallOptions.dll

Filesize
14KB

MD5
4cb36c62157fe5bf48aa7f20bc0a9eb0

SHA1
ca194fb9ab75fbf23a0eb0814fd44996b5959210

SHA256
a4774fa2602702951839d3d3a593f3b39e71e14c3fbab77bf6274935924d755b

SHA512
fd141c0b8ead070b2b266344ad6e804df24a2dd578f78285ece6e003de35b4dfdac1ebbcc0ce2ca6f0a4e5673fc0e26639dcc5073e4e474d4ddcca9c6f978cdd

Download Submit
\Users\Admin\AppData\Local\Temp\nsyB433.tmp\NSIS_SkinCrafter_Plugin.dll

Filesize
5.8MB

MD5
bad139a2d8491896ce10ee8e4e55a921

SHA1
4346289950aa9b547d96553ced684b6a05af0234

SHA256
363e9c63b62d61ff3dd5f3cb1de5d9c2320c95787ae0a30035c19f01adebb0c3

SHA512
7ba1908909237986c573244743f4632dde72da9f708c151879102633f7bd7cffbaf1f79b3bb3797952304248aae9dd984f6a07a9dbf6433cc5b2d7f72ee80e15

Download Submit
\Users\Admin\AppData\Local\Temp\nsyB433.tmp\SkinCrafter.dll

Filesize
792KB

MD5
8fea8fd177034b52e6a5886fb5e780bd

SHA1
99f511388a2420d53b8406baed48ba550842eaad

SHA256
546dddc7a31609b5bc3dc8ecef6f6782b77613853c54171fc32314c08a69e8de

SHA512
5d82a3b9cf9d69049e6278a6d835b8a9a386c97ae9a69cf658675b0a8751a344d0da1ee704e9bb9023dab7cd77fdca684bdc90837960b583eef0bb4324498696

Download Submit
\Users\Admin\AppData\Local\Temp\nsyB433.tmp\System.dll

Filesize
11KB

MD5
4d3b19a81bd51f8ce44b93643a4e3a99

SHA1
35f8b00e85577b014080df98bd2c378351d9b3e9

SHA256
fda0018ab182ac6025d2fc9a2efcce3745d1da21ce5141859f8286cf319a52ce

SHA512
b2ba9c961c0e1617f802990587a9000979ab5cc493ae2f8ca852eb43eeaf24916b0b29057dbff7d41a1797dfb2dce3db41990e8639b8f205771dbec3fd80f622

Download Submit
\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Au_.exe

Filesize
8.8MB

MD5
fa2f3ffb34db747f9e0f71db54366828

SHA1
bce3c4f26fe9620689bd789eb289bddb95b13c07

SHA256
7a9c0e726aa4db17aeec45f63425219a098756dc6a434c084853c98e3d4ec9eb

SHA512
44d22f63e5d8bea4411da3d3f224fc468b798032b967ac73ec38cdb14bd6f5bab7014b2e82aad442cba302b60b5f18e1df3d1f49c54c60dee44c5e4dee6d7dde

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/2688-25-0x0000000002880000-0x000000000294C000-memory.dmp

Filesize
816KB

Download