guloader | 4b9ac98894b35f3a86ba110c99abb5ac6842462ed6d07a6a6ebd1ce274792665

General

Target

8e00826760dc9f5c25a3b538ba87d656c76b645135abf11bd55f5de81fc4273c.exe
Size

545KB
MD5

af7981a2ac42f21ac4820f14bbb294b2
SHA1

51d83fde26f84015365231c9526cc26adf2e3bf0
SHA256

8e00826760dc9f5c25a3b538ba87d656c76b645135abf11bd55f5de81fc4273c
SHA512

866320fc0b724695cfa9e1abf2f673ab48150bdab109f30106bd838ca3ba6aa5e50eb554e217e2bec974065a5a0ecb735d65abc5c8493abe1d14537ca73c1ef1
SSDEEP

6144:lp+ggeIHjncXksyUHxAqJ1LGmg8EmDu7dRQ26RihUvqhEYGZtrLBU91BscRt1y/n:7XYvfs1c8JGRQ2UicttUjy82Ki5p

Score

10^/10

guloader downloader persistence

Malware Config

Signatures

Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader

Loads dropped DLL 1 IoCs

pid	Process
2512	8e00826760dc9f5c25a3b538ba87d656c76b645135abf11bd55f5de81fc4273c.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-1-5-21-1298544033-3225604241-2703760938-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\plat = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Nathimlen\\Styrke.exe"	wab.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2512	8e00826760dc9f5c25a3b538ba87d656c76b645135abf11bd55f5de81fc4273c.exe
2984	wab.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2512 set thread context of 2984	2512	8e00826760dc9f5c25a3b538ba87d656c76b645135abf11bd55f5de81fc4273c.exe	28

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

System Information Discovery
T1082

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2512	8e00826760dc9f5c25a3b538ba87d656c76b645135abf11bd55f5de81fc4273c.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2512 wrote to memory of 2984	2512	8e00826760dc9f5c25a3b538ba87d656c76b645135abf11bd55f5de81fc4273c.exe	28
PID 2512 wrote to memory of 2984	2512	8e00826760dc9f5c25a3b538ba87d656c76b645135abf11bd55f5de81fc4273c.exe	28
PID 2512 wrote to memory of 2984	2512	8e00826760dc9f5c25a3b538ba87d656c76b645135abf11bd55f5de81fc4273c.exe	28
PID 2512 wrote to memory of 2984	2512	8e00826760dc9f5c25a3b538ba87d656c76b645135abf11bd55f5de81fc4273c.exe	28
PID 2512 wrote to memory of 2984	2512	8e00826760dc9f5c25a3b538ba87d656c76b645135abf11bd55f5de81fc4273c.exe	28
PID 2512 wrote to memory of 2984	2512	8e00826760dc9f5c25a3b538ba87d656c76b645135abf11bd55f5de81fc4273c.exe	28

C:\Users\Admin\AppData\Local\Temp\8e00826760dc9f5c25a3b538ba87d656c76b645135abf11bd55f5de81fc4273c.exe
"C:\Users\Admin\AppData\Local\Temp\8e00826760dc9f5c25a3b538ba87d656c76b645135abf11bd55f5de81fc4273c.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2512
- C:\Program Files (x86)\windows mail\wab.exe
  "C:\Users\Admin\AppData\Local\Temp\8e00826760dc9f5c25a3b538ba87d656c76b645135abf11bd55f5de81fc4273c.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  PID:2984

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\nsd2435.tmp\System.dll

Filesize
11KB

MD5
75ed96254fbf894e42058062b4b4f0d1

SHA1
996503f1383b49021eb3427bc28d13b5bbd11977

SHA256
a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7

SHA512
58174896db81d481947b8745dafe3a02c150f3938bb4543256e8cce1145154e016d481df9fe68dac6d48407c62cbe20753320ebd5fe5e84806d07ce78e0eb0c4

Download Submit
memory/2512-15-0x00000000040D0000-0x0000000005000000-memory.dmp

Filesize
15.2MB

Download
memory/2512-10-0x00000000040D0000-0x0000000005000000-memory.dmp

Filesize
15.2MB

Download
memory/2512-11-0x0000000077940000-0x0000000077AE9000-memory.dmp

Filesize
1.7MB

Download
memory/2512-12-0x0000000077B30000-0x0000000077C06000-memory.dmp

Filesize
856KB

Download
memory/2512-13-0x0000000074E90000-0x0000000074E96000-memory.dmp

Filesize
24KB

Download
memory/2512-27-0x00000000040D0000-0x0000000005000000-memory.dmp

Filesize
15.2MB

Download
memory/2984-16-0x0000000077940000-0x0000000077AE9000-memory.dmp

Filesize
1.7MB

Download
memory/2984-17-0x0000000077B66000-0x0000000077B67000-memory.dmp

Filesize
4KB

Download
memory/2984-19-0x0000000077B30000-0x0000000077C06000-memory.dmp

Filesize
856KB

Download
memory/2984-20-0x0000000000400000-0x0000000000581000-memory.dmp

Filesize
1.5MB

Download
memory/2984-21-0x0000000000AF0000-0x0000000001A20000-memory.dmp

Filesize
15.2MB

Download
memory/2984-14-0x0000000000AF0000-0x0000000001A20000-memory.dmp

Filesize
15.2MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads