nymaim | cfafbf0722a5d4800629c5fa7b5504ca255868ce0ac4178d11a1bdd127752ded

Analysis

max time kernel
63s
max time network
84s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
26/11/2022, 01:18

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

file.exe
Size

1.5MB
MD5

bd01108cb258ed98f496094448b6035c
SHA1

00ff960b851404ac9cb230e3c39584058f693be4
SHA256

cfafbf0722a5d4800629c5fa7b5504ca255868ce0ac4178d11a1bdd127752ded
SHA512

0a97320df6193c88b3cba945968dc1151e2ecf8a533698cff5a431a46c74a77b47b5ed8492a7470d4749c77685a69efba3d6e1c313dd804911c8a00264631c25
SSDEEP

24576:lizSCvJmpe0NKCbICJDym+JcfXY3szkrG7m2uyBluGp522gZ5AM0tcWpnqE6gZIw:OSDNKwhJmmo3szkq7mAllp522xMvWbNn

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

45.139.105.171

85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim

Executes dropped EXE 3 IoCs

pid	Process
952	is-EIQLL.tmp
772	PrintFolders.exe
536	FYrvliyr.exe

Loads dropped DLL 10 IoCs

pid	Process
1772	file.exe
952	is-EIQLL.tmp
952	is-EIQLL.tmp
952	is-EIQLL.tmp
952	is-EIQLL.tmp
772	PrintFolders.exe
772	PrintFolders.exe
772	PrintFolders.exe
536	FYrvliyr.exe
536	FYrvliyr.exe

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

Drops file in Program Files directory 9 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\PrintFolders\is-4C5JN.tmp	is-EIQLL.tmp
File created	C:\Program Files (x86)\PrintFolders\is-MIJ3A.tmp	is-EIQLL.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\unins000.dat	is-EIQLL.tmp
File created	C:\Program Files (x86)\PrintFolders\unins000.dat	is-EIQLL.tmp
File created	C:\Program Files (x86)\PrintFolders\is-GK4C2.tmp	is-EIQLL.tmp
File created	C:\Program Files (x86)\PrintFolders\is-3IJK2.tmp	is-EIQLL.tmp
File created	C:\Program Files (x86)\PrintFolders\is-97OJQ.tmp	is-EIQLL.tmp
File created	C:\Program Files (x86)\PrintFolders\is-P84RF.tmp	is-EIQLL.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\PrintFolders.exe	is-EIQLL.tmp

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

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
988	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
772	PrintFolders.exe
772	PrintFolders.exe
772	PrintFolders.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeRestorePrivilege	952	is-EIQLL.tmp
Token: SeBackupPrivilege	952	is-EIQLL.tmp
Token: SeDebugPrivilege	988	taskkill.exe

Suspicious use of WriteProcessMemory 35 IoCs

description	pid	Process	procid_target
PID 1772 wrote to memory of 952	1772	file.exe	28
PID 1772 wrote to memory of 952	1772	file.exe	28
PID 1772 wrote to memory of 952	1772	file.exe	28
PID 1772 wrote to memory of 952	1772	file.exe	28
PID 1772 wrote to memory of 952	1772	file.exe	28
PID 1772 wrote to memory of 952	1772	file.exe	28
PID 1772 wrote to memory of 952	1772	file.exe	28
PID 952 wrote to memory of 772	952	is-EIQLL.tmp	29
PID 952 wrote to memory of 772	952	is-EIQLL.tmp	29
PID 952 wrote to memory of 772	952	is-EIQLL.tmp	29
PID 952 wrote to memory of 772	952	is-EIQLL.tmp	29
PID 952 wrote to memory of 772	952	is-EIQLL.tmp	29
PID 952 wrote to memory of 772	952	is-EIQLL.tmp	29
PID 952 wrote to memory of 772	952	is-EIQLL.tmp	29
PID 772 wrote to memory of 536	772	PrintFolders.exe	30
PID 772 wrote to memory of 536	772	PrintFolders.exe	30
PID 772 wrote to memory of 536	772	PrintFolders.exe	30
PID 772 wrote to memory of 536	772	PrintFolders.exe	30
PID 772 wrote to memory of 536	772	PrintFolders.exe	30
PID 772 wrote to memory of 536	772	PrintFolders.exe	30
PID 772 wrote to memory of 536	772	PrintFolders.exe	30
PID 772 wrote to memory of 1872	772	PrintFolders.exe	33
PID 772 wrote to memory of 1872	772	PrintFolders.exe	33
PID 772 wrote to memory of 1872	772	PrintFolders.exe	33
PID 772 wrote to memory of 1872	772	PrintFolders.exe	33
PID 772 wrote to memory of 1872	772	PrintFolders.exe	33
PID 772 wrote to memory of 1872	772	PrintFolders.exe	33
PID 772 wrote to memory of 1872	772	PrintFolders.exe	33
PID 1872 wrote to memory of 988	1872	cmd.exe	35
PID 1872 wrote to memory of 988	1872	cmd.exe	35
PID 1872 wrote to memory of 988	1872	cmd.exe	35
PID 1872 wrote to memory of 988	1872	cmd.exe	35
PID 1872 wrote to memory of 988	1872	cmd.exe	35
PID 1872 wrote to memory of 988	1872	cmd.exe	35
PID 1872 wrote to memory of 988	1872	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1772
- C:\Users\Admin\AppData\Local\Temp\is-P8S0P.tmp\is-EIQLL.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-P8S0P.tmp\is-EIQLL.tmp" /SL4 $80022 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1308806 51712
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:952
- - C:\Program Files (x86)\PrintFolders\PrintFolders.exe
    "C:\Program Files (x86)\PrintFolders\PrintFolders.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:772
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\FYrvliyr.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      PID:536
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "PrintFolders.exe" /f & erase "C:\Program Files (x86)\PrintFolders\PrintFolders.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1872
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "PrintFolders.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:988

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Program Files (x86)\PrintFolders\PrintFolders.exe

Filesize
1.7MB

MD5
e7c36e6a4380ad2f2c6696fafebe4aa0

SHA1
63e1977af59d0b0cafafb5d71339d42167e4f837

SHA256
d34cf6aee969bb2427804aee1328c30e4b0bbdc3a284e1ec58132c9c6736e4f6

SHA512
6dc0d06ddd67e894cf8f8c14c1c0503546d491f565d89e845d31e5eb271f38676a8209f4eb4326736d3decc2661c73f66daa5f4a847017b82e5cc330ccd41a53

Download Submit
C:\Program Files (x86)\PrintFolders\PrintFolders.exe

Filesize
1.7MB

MD5
e7c36e6a4380ad2f2c6696fafebe4aa0

SHA1
63e1977af59d0b0cafafb5d71339d42167e4f837

SHA256
d34cf6aee969bb2427804aee1328c30e4b0bbdc3a284e1ec58132c9c6736e4f6

SHA512
6dc0d06ddd67e894cf8f8c14c1c0503546d491f565d89e845d31e5eb271f38676a8209f4eb4326736d3decc2661c73f66daa5f4a847017b82e5cc330ccd41a53

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-P8S0P.tmp\is-EIQLL.tmp

Filesize
643KB

MD5
85b94e72c3f2d2b5464e2aaf3c9e242a

SHA1
ce7ccae5f50a990d059d59292d4a332979e162ba

SHA256
1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7

SHA512
c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-P8S0P.tmp\is-EIQLL.tmp

Filesize
643KB

MD5
85b94e72c3f2d2b5464e2aaf3c9e242a

SHA1
ce7ccae5f50a990d059d59292d4a332979e162ba

SHA256
1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7

SHA512
c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\FYrvliyr.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\FYrvliyr.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Program Files (x86)\PrintFolders\PrintFolders.exe

Filesize
1.7MB

MD5
e7c36e6a4380ad2f2c6696fafebe4aa0

SHA1
63e1977af59d0b0cafafb5d71339d42167e4f837

SHA256
d34cf6aee969bb2427804aee1328c30e4b0bbdc3a284e1ec58132c9c6736e4f6

SHA512
6dc0d06ddd67e894cf8f8c14c1c0503546d491f565d89e845d31e5eb271f38676a8209f4eb4326736d3decc2661c73f66daa5f4a847017b82e5cc330ccd41a53

Download Submit
\Program Files (x86)\PrintFolders\PrintFolders.exe

Filesize
1.7MB

MD5
e7c36e6a4380ad2f2c6696fafebe4aa0

SHA1
63e1977af59d0b0cafafb5d71339d42167e4f837

SHA256
d34cf6aee969bb2427804aee1328c30e4b0bbdc3a284e1ec58132c9c6736e4f6

SHA512
6dc0d06ddd67e894cf8f8c14c1c0503546d491f565d89e845d31e5eb271f38676a8209f4eb4326736d3decc2661c73f66daa5f4a847017b82e5cc330ccd41a53

Download Submit
\Program Files (x86)\PrintFolders\PrintFolders.exe

Filesize
1.7MB

MD5
e7c36e6a4380ad2f2c6696fafebe4aa0

SHA1
63e1977af59d0b0cafafb5d71339d42167e4f837

SHA256
d34cf6aee969bb2427804aee1328c30e4b0bbdc3a284e1ec58132c9c6736e4f6

SHA512
6dc0d06ddd67e894cf8f8c14c1c0503546d491f565d89e845d31e5eb271f38676a8209f4eb4326736d3decc2661c73f66daa5f4a847017b82e5cc330ccd41a53

Download Submit
\Users\Admin\AppData\Local\Temp\is-C0HTG.tmp\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-C0HTG.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-C0HTG.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-P8S0P.tmp\is-EIQLL.tmp

Filesize
643KB

MD5
85b94e72c3f2d2b5464e2aaf3c9e242a

SHA1
ce7ccae5f50a990d059d59292d4a332979e162ba

SHA256
1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7

SHA512
c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\FYrvliyr.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\FYrvliyr.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\FYrvliyr.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/772-75-0x0000000001AF0000-0x0000000002AA6000-memory.dmp

Filesize
15.7MB

Download
memory/772-88-0x0000000001AF0000-0x0000000002AA6000-memory.dmp

Filesize
15.7MB

Download
memory/772-76-0x0000000001AF0000-0x0000000002AA6000-memory.dmp

Filesize
15.7MB

Download
memory/772-77-0x0000000000400000-0x00000000013B6000-memory.dmp

Filesize
15.7MB

Download
memory/772-78-0x0000000000400000-0x00000000013B6000-memory.dmp

Filesize
15.7MB

Download
memory/772-74-0x0000000000400000-0x00000000013B6000-memory.dmp

Filesize
15.7MB

Download
memory/772-96-0x0000000000400000-0x00000000013B6000-memory.dmp

Filesize
15.7MB

Download
memory/772-93-0x0000000000400000-0x00000000013B6000-memory.dmp

Filesize
15.7MB

Download
memory/772-89-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/772-87-0x0000000000400000-0x00000000013B6000-memory.dmp

Filesize
15.7MB

Download
memory/952-86-0x0000000002FA0000-0x0000000003F56000-memory.dmp

Filesize
15.7MB

Download
memory/952-73-0x0000000002FA0000-0x0000000003F56000-memory.dmp

Filesize
15.7MB

Download
memory/1772-55-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1772-54-0x00000000757E1000-0x00000000757E3000-memory.dmp

Filesize
8KB

Download
memory/1772-65-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/1772-97-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download