squirrelwaffle | 27fe65cd73ff1a6419ec3fd67afae07f0bbdbc241d43faa7f9257d27f93c5bf2

Resubmissions

24-09-2021 14:21

210924-rpcsdshca9 10

16-09-2021 14:45

210916-r477vagebj 8

Analysis

max time kernel
139s
max time network
142s
platform
windows10_x64
resource
win10v20210408
submitted
16-09-2021 14:45

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General

Target

www2.bin.dll

Score

10^/10

squirrelwaffle downloader

Malware Config

Extracted

Family

squirrelwaffle

spiritofprespa.com/9783Tci2SGF6

amjsys.com/RIZszf8vR

hrms.prodigygroupindia.com/SKyufGZV

centralfloridaasphalt.com/GCN0FChS

jhehosting.com/rUuKheB7

shoeclearanceoutlet.co.uk/46awDTJjI4l

kmslogistik.com/aS1mjTkJIy

bartek-lenart.pl/1bWJ57V9vx

voip.voipcallhub.com/ZVmfdGHs4T

mercyfoundationcio.org/XF9aQrXnakeG

key4net.com/a8A2kcc1J

chaturanga.groopy.com/mxN3lxZoVApc

voipcallhub.com/ilGht5r26

ems.prodigygroupindia.com/v5RvVJTz

novamarketing.com.pk/k8l36uus

lenartsa.webd.pro/fz16DjmKmHtl

lead.jhinfotech.co/YERjiAMaupaz

Attributes

blocklist
94.46.179.80

206.189.205.251

88.242.66.45

85.75.110.214

87.104.3.136

207.244.91.171

49.230.88.160

91.149.252.75

91.149.252.88

92.211.109.152

178.0.250.168

88.69.16.230

95.223.77.160

99.234.62.23

2.206.105.223

84.222.8.201

89.183.239.142

5.146.132.101

77.7.60.154

45.41.106.122

45.74.72.13

74.58.152.123

88.87.68.197

211.107.25.121

109.70.100.25

185.67.82.114

207.102.138.19

204.101.161.14

193.128.108.251

111.7.100.17

111.7.100.16

74.125.210.62

74.125.210.36

104.244.74.57

185.220.101.145

185.220.101.144

185.220.101.18

185.220.100.246

185.220.101.228

185.220.100.243

185.220.101.229

185.220.101.147

185.220.102.250

185.220.100.241

199.195.251.84

213.164.204.94

74.125.213.7

74.125.213.9

185.220.100.249

37.71.173.58

93.2.220.100

188.10.191.109

81.36.17.247

70.28.47.118

45.133.172.222

108.41.227.196

37.235.53.46

162.216.47.22

154.3.42.51

45.86.200.60

212.230.181.152

185.192.70.11

14.33.131.72

94.46.179.80

206.189.205.251

178.255.172.194

84.221.205.40

155.138.242.103

178.212.98.156

85.65.32.191

31.167.184.201

88.242.66.45

36.65.102.42

203.213.127.79

85.75.110.214

93.78.214.187

204.152.81.185

183.171.72.218

168.194.101.130

87.104.3.136

92.211.196.33

197.92.140.125

207.244.91.171

49.230.88.160

196.74.16.153

91.149.252.75

91.149.252.88

92.206.15.202

82.21.114.63

92.211.109.152

178.0.250.168

178.203.145.135

85.210.36.4

199.83.207.72

86.132.134.203

88.69.16.230

99.247.129.88

37.201.195.12

87.140.192.0

88.152.185.188

87.156.177.91

99.229.57.160

95.223.77.160

88.130.54.214

99.234.62.23

2.206.105.223

94.134.179.130

84.221.255.199

84.222.8.201

89.183.239.142

87.158.21.26

93.206.148.216

5.146.132.101

77.7.60.154

95.223.75.85

162.254.173.187

50.99.254.163

45.41.106.122

99.237.13.3

45.74.72.13

108.171.64.202

74.58.152.123

216.209.253.121

88.87.68.197

211.107.25.121

109.70.100.25

185.67.82.114

207.102.138.19

204.101.161.14

193.128.108.251

111.7.100.17

111.7.100.16

74.125.210.62

74.125.210.36

104.244.74.57

185.220.101.145

185.220.101.144

185.220.101.18

185.220.100.246

185.220.101.228

185.220.100.243

185.220.101.229

185.220.101.147

185.220.102.250

Signatures

SquirrelWaffle is a simple downloader written in C++.
SquirrelWaffle.
downloader squirrelwaffle

squirrelwaffle 2 IoCs

Squirrelwaffle Payload

Processes:

resource	yara_rule
behavioral2/memory/1108-116-0x0000000073F10000-0x0000000073F72000-memory.dmp	squirrelwaffle
behavioral2/memory/1108-115-0x0000000073F10000-0x0000000073F21000-memory.dmp	squirrelwaffle

Blocklisted process makes network request 5 IoCs

Processes:

rundll32.exe

flow pid process

9 1108 rundll32.exe
12 1108 rundll32.exe
15 1108 rundll32.exe
16 1108 rundll32.exe
17 1108 rundll32.exe

flow	pid	process
9	1108	rundll32.exe
12	1108	rundll32.exe
15	1108	rundll32.exe
16	1108	rundll32.exe
17	1108	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 856 wrote to memory of 1108	856	rundll32.exe	rundll32.exe
PID 856 wrote to memory of 1108	856	rundll32.exe	rundll32.exe
PID 856 wrote to memory of 1108	856	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\www2.bin.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:856
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\www2.bin.dll,#1
  2⤵
  - Blocklisted process makes network request
  PID:1108

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/1108-114-0x0000000000000000-mapping.dmp

Download
memory/1108-116-0x0000000073F10000-0x0000000073F72000-memory.dmp

Filesize
392KB

Download
memory/1108-115-0x0000000073F10000-0x0000000073F21000-memory.dmp

Filesize
68KB

Download
memory/1108-117-0x0000000000930000-0x0000000000931000-memory.dmp

Filesize
4KB

Download