stealc | 39a973d7341e94d962f89bf898ecb582d9798c7c8aad415551777aacbd18a90d

Analysis

max time kernel
16s
max time network
39s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
19/07/2023, 10:13

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General

Target

Fuse CC.exe
Size

749.8MB
MD5

2b09d7bb9cf9886f81f103558dbefa43
SHA1

8c70736bdb52305d3e295ff54547b3387778166e
SHA256

39a973d7341e94d962f89bf898ecb582d9798c7c8aad415551777aacbd18a90d
SHA512

98b721dc222f4ac91ea63921b7c265fe67c0f7d96693a426d8fa7ce2ee0e2ff2237bae7bfac679e5735c031d45019caf450555816ac1ea948c0d668d667900b4
SSDEEP

49152:kBuZrEUPwGjLiIX1LJLJZ2iZ3vxm3c7ld:6kLPwwLTXjXvm3ch

Score

10^/10

stealc discovery persistence spyware stealer upx

Malware Config

Extracted

Family

stealc

http://185.161.248.78/eba140b7c5f2f228.php

Signatures

Detects Stealc stealer 4 IoCs

stealer

resource	yara_rule
behavioral1/memory/2776-84-0x00000000001B0000-0x00000000001C6000-memory.dmp	family_stealc
behavioral1/memory/2776-85-0x0000000000400000-0x0000000000629000-memory.dmp	family_stealc
behavioral1/memory/2776-146-0x0000000000400000-0x0000000000629000-memory.dmp	family_stealc
behavioral1/memory/2776-147-0x00000000001B0000-0x00000000001C6000-memory.dmp	family_stealc

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Downloads MZ/PE file

Executes dropped EXE 3 IoCs

pid	Process
2496	Fuse CC.tmp
2776	Sеtup.exe
1736	FCBAEHCAEG.exe

Loads dropped DLL 7 IoCs

pid	Process
2172	Fuse CC.exe
2496	Fuse CC.tmp
2496	Fuse CC.tmp
2776	Sеtup.exe
2776	Sеtup.exe
1996	cmd.exe
1996	cmd.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
T1081

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/files/0x0008000000016d17-152.dat	upx
behavioral1/files/0x0008000000016d17-151.dat	upx
behavioral1/files/0x0008000000016d17-150.dat	upx
behavioral1/files/0x0008000000016d17-149.dat	upx
behavioral1/memory/1736-156-0x0000000001350000-0x00000000021AE000-memory.dmp	upx
behavioral1/memory/1736-157-0x0000000001350000-0x00000000021AE000-memory.dmp	upx

Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-377084978-2088738870-2818360375-1000\Software\Microsoft\Windows\CurrentVersion\Run	sidebar.exe

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	Sеtup.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	Sеtup.exe

Suspicious behavior: EnumeratesProcesses 13 IoCs

pid	Process
2496	Fuse CC.tmp
2496	Fuse CC.tmp
2776	Sеtup.exe
2776	Sеtup.exe
2776	Sеtup.exe
2776	Sеtup.exe
2776	Sеtup.exe
2776	Sеtup.exe
2776	Sеtup.exe
2776	Sеtup.exe
2776	Sеtup.exe
2776	Sеtup.exe
2776	Sеtup.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2496	Fuse CC.tmp

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2172 wrote to memory of 2496	2172	Fuse CC.exe	30
PID 2172 wrote to memory of 2496	2172	Fuse CC.exe	30
PID 2172 wrote to memory of 2496	2172	Fuse CC.exe	30
PID 2172 wrote to memory of 2496	2172	Fuse CC.exe	30
PID 2172 wrote to memory of 2496	2172	Fuse CC.exe	30
PID 2172 wrote to memory of 2496	2172	Fuse CC.exe	30
PID 2172 wrote to memory of 2496	2172	Fuse CC.exe	30
PID 2496 wrote to memory of 2776	2496	Fuse CC.tmp	31
PID 2496 wrote to memory of 2776	2496	Fuse CC.tmp	31
PID 2496 wrote to memory of 2776	2496	Fuse CC.tmp	31
PID 2496 wrote to memory of 2776	2496	Fuse CC.tmp	31
PID 2776 wrote to memory of 1996	2776	Sеtup.exe	35
PID 2776 wrote to memory of 1996	2776	Sеtup.exe	35
PID 2776 wrote to memory of 1996	2776	Sеtup.exe	35
PID 2776 wrote to memory of 1996	2776	Sеtup.exe	35
PID 1996 wrote to memory of 1736	1996	cmd.exe	37
PID 1996 wrote to memory of 1736	1996	cmd.exe	37
PID 1996 wrote to memory of 1736	1996	cmd.exe	37
PID 1996 wrote to memory of 1736	1996	cmd.exe	37

C:\Users\Admin\AppData\Local\Temp\Fuse CC.exe
"C:\Users\Admin\AppData\Local\Temp\Fuse CC.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2172
- C:\Users\Admin\AppData\Local\Temp\is-TUQC6.tmp\Fuse CC.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-TUQC6.tmp\Fuse CC.tmp" /SL5="$9001A,978165,844288,C:\Users\Admin\AppData\Local\Temp\Fuse CC.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:2496
- - C:\Users\Admin\Data\Sеtup.exe
    "C:\Users\Admin\Data\Sеtup.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Checks processor information in registry
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:2776
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\FCBAEHCAEG.exe"
      4⤵
      Loads dropped DLL
      Suspicious use of WriteProcessMemory
      PID:1996
    - - C:\Users\Admin\AppData\Local\Temp\FCBAEHCAEG.exe
        
        "C:\Users\Admin\AppData\Local\Temp\FCBAEHCAEG.exe"
        5⤵
        Executes dropped EXE
        
        PID:1736
      - C:\Windows\system32\cmd.exe
        
        C:\Windows\system32\cmd.exe /C choice /C Y /N /D Y /T 0 &Del C:\Users\Admin\AppData\Local\Temp\FCBAEHCAEG.exe
        6⤵
        
        PID:1072
        
        C:\Windows\system32\choice.exe
        
        choice /C Y /N /D Y /T 0
        7⤵
        
        PID:1660

C:\Program Files\Windows Sidebar\sidebar.exe
"C:\Program Files\Windows Sidebar\sidebar.exe" /showGadgets
1⤵
- Adds Run key to start application
PID:2792

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\FCBAEHCAEG.exe

Filesize
4.3MB

MD5
14817abceacc2869286157bc5198ba30

SHA1
8d280a5abede4d4cfb2017ace6b172c69771d470

SHA256
a0755055fec6800ed05b9f1c5c1a997a279a6b992a0eca4b0dc3789120ac4ad3

SHA512
190825317c17477ea511f86f85476fa860728a1379e256415b6414b0fa43137322bcbbb37dd63ed4f67614efebbfd90667fc26d853bd92c3cd254405b637bec9

Download Submit
C:\Users\Admin\AppData\Local\Temp\FCBAEHCAEG.exe

Filesize
4.3MB

MD5
14817abceacc2869286157bc5198ba30

SHA1
8d280a5abede4d4cfb2017ace6b172c69771d470

SHA256
a0755055fec6800ed05b9f1c5c1a997a279a6b992a0eca4b0dc3789120ac4ad3

SHA512
190825317c17477ea511f86f85476fa860728a1379e256415b6414b0fa43137322bcbbb37dd63ed4f67614efebbfd90667fc26d853bd92c3cd254405b637bec9

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-TUQC6.tmp\Fuse CC.tmp

Filesize
3.0MB

MD5
4475e9ba18e48f121e5885a88a7f514d

SHA1
51056fcc1ab1cc5d242ef751c9a1508868b58fbb

SHA256
f51a6b0ada2b30b7ceeab020fd3718e20c6ee97619e3c19f346cb0b257a50c63

SHA512
b7fcab45d04e9397ca9590748b8b6637ff8993b4c427046e0ed7d5e01b228bb66ee27de7fe2371fecdb5b20b8f9964e5e4bc96c4aef00df208b0d1c8d3f79078

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-TUQC6.tmp\Fuse CC.tmp

Filesize
3.0MB

MD5
4475e9ba18e48f121e5885a88a7f514d

SHA1
51056fcc1ab1cc5d242ef751c9a1508868b58fbb

SHA256
f51a6b0ada2b30b7ceeab020fd3718e20c6ee97619e3c19f346cb0b257a50c63

SHA512
b7fcab45d04e9397ca9590748b8b6637ff8993b4c427046e0ed7d5e01b228bb66ee27de7fe2371fecdb5b20b8f9964e5e4bc96c4aef00df208b0d1c8d3f79078

Download Submit
C:\Users\Admin\Data\Sеtup.exe

Filesize
206KB

MD5
cf6a7ae795e3dcde632ab66eee90627c

SHA1
2c0498b668d3c474207c82ee6c0b8652daac1544

SHA256
1c461f0da6e91f50fa1a22fca9c306b745669697110fa3ba71bbdf8851dd0268

SHA512
69efe2b04bb0557fa0bd1e7304f48bed40d5d29a3a5dd444bba7cddba048892a9af8c7fbd70085be3acd90c254f0f6b29d94e4df994a3330cedaf22026f46992

Download Submit
C:\Users\Admin\Data\Sеtup.exe

Filesize
206KB

MD5
cf6a7ae795e3dcde632ab66eee90627c

SHA1
2c0498b668d3c474207c82ee6c0b8652daac1544

SHA256
1c461f0da6e91f50fa1a22fca9c306b745669697110fa3ba71bbdf8851dd0268

SHA512
69efe2b04bb0557fa0bd1e7304f48bed40d5d29a3a5dd444bba7cddba048892a9af8c7fbd70085be3acd90c254f0f6b29d94e4df994a3330cedaf22026f46992

Download Submit
\ProgramData\mozglue.dll

Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

Download Submit
\ProgramData\nss3.dll

Filesize
2.0MB

MD5
1cc453cdf74f31e4d913ff9c10acdde2

SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe

SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

Download Submit
\Users\Admin\AppData\Local\Temp\FCBAEHCAEG.exe

Filesize
4.3MB

MD5
14817abceacc2869286157bc5198ba30

SHA1
8d280a5abede4d4cfb2017ace6b172c69771d470

SHA256
a0755055fec6800ed05b9f1c5c1a997a279a6b992a0eca4b0dc3789120ac4ad3

SHA512
190825317c17477ea511f86f85476fa860728a1379e256415b6414b0fa43137322bcbbb37dd63ed4f67614efebbfd90667fc26d853bd92c3cd254405b637bec9

Download Submit
\Users\Admin\AppData\Local\Temp\FCBAEHCAEG.exe

Filesize
4.3MB

MD5
14817abceacc2869286157bc5198ba30

SHA1
8d280a5abede4d4cfb2017ace6b172c69771d470

SHA256
a0755055fec6800ed05b9f1c5c1a997a279a6b992a0eca4b0dc3789120ac4ad3

SHA512
190825317c17477ea511f86f85476fa860728a1379e256415b6414b0fa43137322bcbbb37dd63ed4f67614efebbfd90667fc26d853bd92c3cd254405b637bec9

Download Submit
\Users\Admin\AppData\Local\Temp\is-TUQC6.tmp\Fuse CC.tmp

Filesize
3.0MB

MD5
4475e9ba18e48f121e5885a88a7f514d

SHA1
51056fcc1ab1cc5d242ef751c9a1508868b58fbb

SHA256
f51a6b0ada2b30b7ceeab020fd3718e20c6ee97619e3c19f346cb0b257a50c63

SHA512
b7fcab45d04e9397ca9590748b8b6637ff8993b4c427046e0ed7d5e01b228bb66ee27de7fe2371fecdb5b20b8f9964e5e4bc96c4aef00df208b0d1c8d3f79078

Download Submit
\Users\Admin\Data\Sеtup.exe

Filesize
206KB

MD5
cf6a7ae795e3dcde632ab66eee90627c

SHA1
2c0498b668d3c474207c82ee6c0b8652daac1544

SHA256
1c461f0da6e91f50fa1a22fca9c306b745669697110fa3ba71bbdf8851dd0268

SHA512
69efe2b04bb0557fa0bd1e7304f48bed40d5d29a3a5dd444bba7cddba048892a9af8c7fbd70085be3acd90c254f0f6b29d94e4df994a3330cedaf22026f46992

Download Submit
\Users\Admin\Data\Sеtup.exe

Filesize
206KB

MD5
cf6a7ae795e3dcde632ab66eee90627c

SHA1
2c0498b668d3c474207c82ee6c0b8652daac1544

SHA256
1c461f0da6e91f50fa1a22fca9c306b745669697110fa3ba71bbdf8851dd0268

SHA512
69efe2b04bb0557fa0bd1e7304f48bed40d5d29a3a5dd444bba7cddba048892a9af8c7fbd70085be3acd90c254f0f6b29d94e4df994a3330cedaf22026f46992

Download Submit
memory/1736-156-0x0000000001350000-0x00000000021AE000-memory.dmp

Filesize
14.4MB

Download
memory/1736-157-0x0000000001350000-0x00000000021AE000-memory.dmp

Filesize
14.4MB

Download
memory/1996-153-0x0000000001DD0000-0x0000000002C2E000-memory.dmp

Filesize
14.4MB

Download
memory/2172-82-0x0000000000400000-0x00000000004DB000-memory.dmp

Filesize
876KB

Download
memory/2172-54-0x0000000000400000-0x00000000004DB000-memory.dmp

Filesize
876KB

Download
memory/2496-81-0x0000000000400000-0x0000000000717000-memory.dmp

Filesize
3.1MB

Download
memory/2496-61-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2776-146-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/2776-147-0x00000000001B0000-0x00000000001C6000-memory.dmp

Filesize
88KB

Download
memory/2776-148-0x00000000002D0000-0x00000000003D0000-memory.dmp

Filesize
1024KB

Download
memory/2776-89-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/2776-85-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/2776-83-0x00000000002D0000-0x00000000003D0000-memory.dmp

Filesize
1024KB

Download
memory/2776-84-0x00000000001B0000-0x00000000001C6000-memory.dmp

Filesize
88KB

Download