guloader | afc7d530c112b47cd33295262f533df60f12568ede477091434381b0d6a2cc8c

General

Target

10cd865c5ece278cad7c4bc881944d6e_JaffaCakes118.exe
Size

112KB
MD5

10cd865c5ece278cad7c4bc881944d6e
SHA1

f339c0a5ab3a3a40cf5d9ae5753c2e5a3ab80f5d
SHA256

afc7d530c112b47cd33295262f533df60f12568ede477091434381b0d6a2cc8c
SHA512

995eef8bbd28e8472b8450beb5398a4de1117d9634848c40978e15c09b2d55db8cb628ea9b1c6c691bbfc59503c13b66bfdad695e7311aef575a83556dca9ddb
SSDEEP

1536:Pz+JBa3z5+1v1rIzB7wT0OrPvEwYS89y94J0GGrweHkKN:yJ43z5Cv1rS7w9rPC4HB

Score

10^/10

guloader discovery downloader

Malware Config

Signatures

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

Checks QEMU agent file 2 TTPs 2 IoCs

Checks presence of QEMU agent, possibly to detect virtualization.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	10cd865c5ece278cad7c4bc881944d6e_JaffaCakes118.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	RegAsm.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2280	10cd865c5ece278cad7c4bc881944d6e_JaffaCakes118.exe
2336	RegAsm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2280 set thread context of 2336	2280	10cd865c5ece278cad7c4bc881944d6e_JaffaCakes118.exe	31

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	10cd865c5ece278cad7c4bc881944d6e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2280	10cd865c5ece278cad7c4bc881944d6e_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2280	10cd865c5ece278cad7c4bc881944d6e_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2280 wrote to memory of 2336	2280	10cd865c5ece278cad7c4bc881944d6e_JaffaCakes118.exe	31
PID 2280 wrote to memory of 2336	2280	10cd865c5ece278cad7c4bc881944d6e_JaffaCakes118.exe	31
PID 2280 wrote to memory of 2336	2280	10cd865c5ece278cad7c4bc881944d6e_JaffaCakes118.exe	31
PID 2280 wrote to memory of 2336	2280	10cd865c5ece278cad7c4bc881944d6e_JaffaCakes118.exe	31
PID 2280 wrote to memory of 2336	2280	10cd865c5ece278cad7c4bc881944d6e_JaffaCakes118.exe	31
PID 2280 wrote to memory of 2336	2280	10cd865c5ece278cad7c4bc881944d6e_JaffaCakes118.exe	31
PID 2280 wrote to memory of 2336	2280	10cd865c5ece278cad7c4bc881944d6e_JaffaCakes118.exe	31
PID 2280 wrote to memory of 2336	2280	10cd865c5ece278cad7c4bc881944d6e_JaffaCakes118.exe	31

C:\Users\Admin\AppData\Local\Temp\10cd865c5ece278cad7c4bc881944d6e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\10cd865c5ece278cad7c4bc881944d6e_JaffaCakes118.exe"
1⤵
- Checks QEMU agent file
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2280
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Users\Admin\AppData\Local\Temp\10cd865c5ece278cad7c4bc881944d6e_JaffaCakes118.exe"
  2⤵
  - Checks QEMU agent file
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:2336

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Cab27FC.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar281F.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
memory/2280-2-0x0000000000300000-0x0000000000310000-memory.dmp

Filesize
64KB

Download
memory/2280-3-0x0000000077531000-0x0000000077632000-memory.dmp

Filesize
1.0MB

Download
memory/2280-5-0x0000000000300000-0x0000000000310000-memory.dmp

Filesize
64KB

Download
memory/2280-4-0x0000000077530000-0x00000000776D9000-memory.dmp

Filesize
1.7MB

Download
memory/2280-2003-0x0000000000300000-0x0000000000310000-memory.dmp

Filesize
64KB

Download
memory/2336-6-0x0000000077530000-0x00000000776D9000-memory.dmp

Filesize
1.7MB

Download

Analysis

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