smokeloader | dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
12-09-2024 10:49

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General

Target

dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
Size

157KB
MD5

d998151c5f135ab73d6336c1f1d2512d
SHA1

6509b6e31176137ff0f0a7b5cf37b73cb2b64c77
SHA256

dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb
SHA512

1d04df68812994954ac6bb96c4f28e0070e4d8a532d9720ebbda7b96b9f263213d46143019a12964b0cce8dddc583f80d14455d684d33b7d0951c362b1f8fc0f
SSDEEP

3072:X1E/rS2paccKntcPeqgKJ+BC185Y/SpJMXt7fkDehq9Ema0trWa6awu:X1onigKGjpaXta9EWrWw1

Score

10^/10

smokeloader backdoor discovery persistence trojan

Malware Config

Extracted

Family

smokeloader

Version

2017

http://dogewareservice.ru/

Signatures

SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader

Deletes itself 1 IoCs

pid	Process
2668	explorer.exe

Loads dropped DLL 1 IoCs

pid	Process
2088	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Windows\CurrentVersion\Run\ODBC = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\gaajvrwg\\brgrudrt.exe"	explorer.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

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

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2088 set thread context of 2672	2088	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe	30

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 3 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	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
2088	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2088 wrote to memory of 2672	2088	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe	30
PID 2088 wrote to memory of 2672	2088	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe	30
PID 2088 wrote to memory of 2672	2088	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe	30
PID 2088 wrote to memory of 2672	2088	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe	30
PID 2088 wrote to memory of 2672	2088	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe	30
PID 2088 wrote to memory of 2672	2088	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe	30
PID 2088 wrote to memory of 2672	2088	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe	30
PID 2088 wrote to memory of 2672	2088	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe	30
PID 2672 wrote to memory of 2668	2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe	31
PID 2672 wrote to memory of 2668	2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe	31
PID 2672 wrote to memory of 2668	2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe	31
PID 2672 wrote to memory of 2668	2672	dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe	31

C:\Users\Admin\AppData\Local\Temp\dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
"C:\Users\Admin\AppData\Local\Temp\dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2088
- C:\Users\Admin\AppData\Local\Temp\dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe
  "C:\Users\Admin\AppData\Local\Temp\dca6e2b783dab78c14ddf9091de65952665a614ecdc8124d9ffe02cca3315dbb.exe"
  2⤵
  - Maps connected drives based on registry
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2672
- - C:\Windows\SysWOW64\explorer.exe
    explorer.exe
    3⤵
    - Deletes itself
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    PID:2668

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

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\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
342B

MD5
b178c6020331a2a4db64f7aa48d294f2

SHA1
96d294bf3fe697cb20de35a09728ef81a6e09891

SHA256
25bff0f7a141e20c4144697c70dd472539cb0dc1feda11b6928444a0a82d805b

SHA512
0a6f936a5e462062c65797b67906dfe7673ef2052c6eb14df330faa82b875a4178db6ddeaebb504a6db7cbdc03ef810bfeb5897ef6b49cac3476dc8c42d5bda4

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab550.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar60E.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
\Users\Admin\AppData\Local\Temp\nse8FB4.tmp\System.dll

Filesize
11KB

MD5
3f176d1ee13b0d7d6bd92e1c7a0b9bae

SHA1
fe582246792774c2c9dd15639ffa0aca90d6fd0b

SHA256
fa4ab1d6f79fd677433a31ada7806373a789d34328da46ccb0449bbf347bd73e

SHA512
0a69124819b7568d0dea4e9e85ce8fe61c7ba697c934e3a95e2dcfb9f252b1d9da7faf8774b6e8efd614885507acc94987733eba09a2f5e7098b774dfc8524b6

Download Submit
memory/2088-7-0x0000000000350000-0x0000000000359000-memory.dmp

Filesize
36KB

Download
memory/2088-10-0x0000000000350000-0x0000000000359000-memory.dmp

Filesize
36KB

Download
memory/2668-29-0x0000000000080000-0x000000000008A000-memory.dmp

Filesize
40KB

Download
memory/2668-14-0x00000000008B0000-0x0000000000B31000-memory.dmp

Filesize
2.5MB

Download
memory/2668-15-0x00000000008B0000-0x0000000000B31000-memory.dmp

Filesize
2.5MB

Download
memory/2668-16-0x0000000000080000-0x000000000008A000-memory.dmp

Filesize
40KB

Download
memory/2668-27-0x0000000000080000-0x000000000008A000-memory.dmp

Filesize
40KB

Download
memory/2672-9-0x0000000000400000-0x0000000000405000-memory.dmp

Filesize
20KB

Download
memory/2672-20-0x0000000000030000-0x000000000003A000-memory.dmp

Filesize
40KB

Download
memory/2672-11-0x0000000000030000-0x000000000003A000-memory.dmp

Filesize
40KB

Download
memory/2672-8-0x0000000000400000-0x0000000000405000-memory.dmp

Filesize
20KB

Download