stealc | cdbeb779126f94f41bdbe870ee884b01def1c3f3e40d3ee067ba7e16547f35d0

General

Target

cdbeb779126f94f41bdbe870ee884b01def1c3f3e40d3ee067ba7e16547f35d0.exe
Size

2.0MB
MD5

0ad8ad02d297ffaf37f618d54dca900c
SHA1

d62c5411eb906d6419ef7fe38e63ca559b007ede
SHA256

cdbeb779126f94f41bdbe870ee884b01def1c3f3e40d3ee067ba7e16547f35d0
SHA512

8fbbbf2214fbc1d6b6e35fa1c1f66e3cd0c04cb74648dec265f1623e13e21527d0895e80eeb696a5346d51b68dcf65df0939280cf183e057c3755456fd6ef5b4
SSDEEP

49152:LAxzRoHcVQdlcB1/Q8ilHAkcMJlAXP13nrXaHAAjRCD8sAh/DwY7gXY6i:sx1TVom1/E3cMJlm1bKHA4CD8Lj7gXy

Score

10^/10

stealc discovery spyware stealer upx

Malware Config

Extracted

Family

stealc

C2

http://185.172.128.145

Attributes

url_path
/3cd2b41cbde8fc9c.php

Signatures

Stealc
Stealc is an infostealer written in C++.
stealer stealc

Executes dropped EXE 2 IoCs

pid	Process
2404	syncUpd.exe
2704	BroomSetup.exe

Loads dropped DLL 5 IoCs

pid	Process
2336	cdbeb779126f94f41bdbe870ee884b01def1c3f3e40d3ee067ba7e16547f35d0.exe
2336	cdbeb779126f94f41bdbe870ee884b01def1c3f3e40d3ee067ba7e16547f35d0.exe
2336	cdbeb779126f94f41bdbe870ee884b01def1c3f3e40d3ee067ba7e16547f35d0.exe
2336	cdbeb779126f94f41bdbe870ee884b01def1c3f3e40d3ee067ba7e16547f35d0.exe
2336	cdbeb779126f94f41bdbe870ee884b01def1c3f3e40d3ee067ba7e16547f35d0.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

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000700000001568c-25.dat	upx
behavioral1/memory/2336-32-0x0000000005410000-0x0000000005940000-memory.dmp	upx
behavioral1/memory/2704-34-0x0000000000400000-0x0000000000930000-memory.dmp	upx
behavioral1/files/0x000700000001568c-33.dat	upx
behavioral1/memory/2704-45-0x0000000000400000-0x0000000000930000-memory.dmp	upx

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	syncUpd.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	syncUpd.exe

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
2504	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2404	syncUpd.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2704	BroomSetup.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2336 wrote to memory of 2404	2336	cdbeb779126f94f41bdbe870ee884b01def1c3f3e40d3ee067ba7e16547f35d0.exe	28
PID 2336 wrote to memory of 2404	2336	cdbeb779126f94f41bdbe870ee884b01def1c3f3e40d3ee067ba7e16547f35d0.exe	28
PID 2336 wrote to memory of 2404	2336	cdbeb779126f94f41bdbe870ee884b01def1c3f3e40d3ee067ba7e16547f35d0.exe	28
PID 2336 wrote to memory of 2404	2336	cdbeb779126f94f41bdbe870ee884b01def1c3f3e40d3ee067ba7e16547f35d0.exe	28
PID 2336 wrote to memory of 2704	2336	cdbeb779126f94f41bdbe870ee884b01def1c3f3e40d3ee067ba7e16547f35d0.exe	29
PID 2336 wrote to memory of 2704	2336	cdbeb779126f94f41bdbe870ee884b01def1c3f3e40d3ee067ba7e16547f35d0.exe	29
PID 2336 wrote to memory of 2704	2336	cdbeb779126f94f41bdbe870ee884b01def1c3f3e40d3ee067ba7e16547f35d0.exe	29
PID 2336 wrote to memory of 2704	2336	cdbeb779126f94f41bdbe870ee884b01def1c3f3e40d3ee067ba7e16547f35d0.exe	29
PID 2336 wrote to memory of 2704	2336	cdbeb779126f94f41bdbe870ee884b01def1c3f3e40d3ee067ba7e16547f35d0.exe	29
PID 2336 wrote to memory of 2704	2336	cdbeb779126f94f41bdbe870ee884b01def1c3f3e40d3ee067ba7e16547f35d0.exe	29
PID 2336 wrote to memory of 2704	2336	cdbeb779126f94f41bdbe870ee884b01def1c3f3e40d3ee067ba7e16547f35d0.exe	29
PID 2704 wrote to memory of 2432	2704	BroomSetup.exe	31
PID 2704 wrote to memory of 2432	2704	BroomSetup.exe	31
PID 2704 wrote to memory of 2432	2704	BroomSetup.exe	31
PID 2704 wrote to memory of 2432	2704	BroomSetup.exe	31
PID 2432 wrote to memory of 2488	2432	cmd.exe	33
PID 2432 wrote to memory of 2488	2432	cmd.exe	33
PID 2432 wrote to memory of 2488	2432	cmd.exe	33
PID 2432 wrote to memory of 2488	2432	cmd.exe	33
PID 2432 wrote to memory of 2504	2432	cmd.exe	34
PID 2432 wrote to memory of 2504	2432	cmd.exe	34
PID 2432 wrote to memory of 2504	2432	cmd.exe	34
PID 2432 wrote to memory of 2504	2432	cmd.exe	34

C:\Users\Admin\AppData\Local\Temp\cdbeb779126f94f41bdbe870ee884b01def1c3f3e40d3ee067ba7e16547f35d0.exe
"C:\Users\Admin\AppData\Local\Temp\cdbeb779126f94f41bdbe870ee884b01def1c3f3e40d3ee067ba7e16547f35d0.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2336
- C:\Users\Admin\AppData\Local\Temp\syncUpd.exe
  C:\Users\Admin\AppData\Local\Temp\syncUpd.exe
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:2404
- C:\Users\Admin\AppData\Local\Temp\BroomSetup.exe
  C:\Users\Admin\AppData\Local\Temp\BroomSetup.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2704
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Roaming\Temp\Task.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2432
  - - C:\Windows\SysWOW64\chcp.com
      chcp 1251
      4⤵
      PID:2488
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /tn "MalayamaraUpdate" /tr "'C:\Users\Admin\AppData\Local\Temp\Updater.exe'" /sc minute /mo 30 /F
      4⤵
      Creates scheduled task(s)
      PID:2504

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
117KB

MD5
3cc0207c7b8ceed6bb74fc7ceabbeafd

SHA1
628ff510528175924d31d5fee9eec8f667395e93

SHA256
6cec9a99f8700afa2242374b5d72c1c75483871f5b0d49b4cd098cf0603487fa

SHA512
f42b1fe7b2b0d0e61fb83cacb8b5f5e7aa9c3c0fa8de3b63fde9ec35a44f7fd5c8abff0fc3cf1f32399e2d86e08ccced8464c8940a871a5ca838d902b48503d7

Download Submit
C:\Users\Admin\AppData\Roaming\Temp\Task.bat

Filesize
128B

MD5
11bb3db51f701d4e42d3287f71a6a43e

SHA1
63a4ee82223be6a62d04bdfe40ef8ba91ae49a86

SHA256
6be22058abfb22b40a42fb003f86b89e204a83024c03eb82cd53e2a0a047c331

SHA512
907ad2c070cc1db89f43459a94d7f48985d939d749c9648b78572a266f0d3fde47813a129e9151dbf4a7d96d36f588172f57c88b8b947b56ed818d7d068abab2

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

Filesize
1014KB

MD5
66ddf5546ae8306eea5bea822a459580

SHA1
893b04f0ae14a9669a0d37b5ce7aa87d2146e2f1

SHA256
d085d13456b4b99f2d77e221ee28f5c32ba6eee81e155031960f523a169d9d42

SHA512
a181a19b0acbb1dd9c02be5223fb15c67cb25480c4cddd6b4179da21feef21edada9fc1eaa836aabc2c5602cd56e748ef649c10af0a4b257df9ba3e3f90dcb13

Download Submit
\Users\Admin\AppData\Local\Temp\nst257D.tmp\INetC.dll

Filesize
21KB

MD5
2b342079303895c50af8040a91f30f71

SHA1
b11335e1cb8356d9c337cb89fe81d669a69de17e

SHA256
2d5d89025911e2e273f90f393624be4819641dbee1606de792362e442e54612f

SHA512
550452dadc86ecd205f40668894116790a456fe46e9985d68093d36cf32abf00edecb5c56ff0287464a0e819db7b3cc53926037a116de6c651332a7cc8035d47

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

Filesize
200KB

MD5
c722591f624fb69970f246b8c81d830f

SHA1
85516decea5d6987bebe39cbadf36053beaf4bb0

SHA256
13cd1152a19fdac6581cac2bd822f34bd3026ea1783ff231e299b6d28c046a6a

SHA512
822584c5c8a0813af4d845e80919776c71a43464ab719d1c303ebaae6a8ed47763183566bedc9be2e8c44de8ee6fd62d1e12be471e5d5c73ae4b1dcdaa34a908

Download Submit
memory/2336-31-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/2336-32-0x0000000005410000-0x0000000005940000-memory.dmp

Filesize
5.2MB

Download
memory/2404-23-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/2404-22-0x0000000000220000-0x0000000000247000-memory.dmp

Filesize
156KB

Download
memory/2404-21-0x0000000000730000-0x0000000000830000-memory.dmp

Filesize
1024KB

Download
memory/2404-44-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/2404-46-0x0000000000730000-0x0000000000830000-memory.dmp

Filesize
1024KB

Download
memory/2404-47-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/2404-62-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/2704-34-0x0000000000400000-0x0000000000930000-memory.dmp

Filesize
5.2MB

Download
memory/2704-35-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2704-45-0x0000000000400000-0x0000000000930000-memory.dmp

Filesize
5.2MB

Download
memory/2704-49-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads