nymaim | 3c56dc35b83a80e8b562d4fccf9b2487db0638030510ab95a41c9422f63c7194

Analysis

max time kernel
56s
max time network
58s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
12-01-2023 05:16

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General

Target

file.exe
Size

1.5MB
MD5

39d312bc74305493e5ee02ffa5010092
SHA1

97574bbe0d5c7c234099699701a5f3b88ed555ce
SHA256

3c56dc35b83a80e8b562d4fccf9b2487db0638030510ab95a41c9422f63c7194
SHA512

b5761492ca7cb0f5bcafb46d1e951a678c302c9404fe3ab1ceed5ec5af3072c74370fd6ca7cab8768bcf1447846327fb0901e1873dcc1b5d4eea631b456ea8bb
SSDEEP

24576:220Sx+ZMicpJgt6Qq3vmm1AQn0FyvmR921ChWCugXC75ld1qSVpk:228mjt6UKcCcCqd1qapk

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

Processes:

file.tmpMitFiles138.exertKFLWBnQ.exe

pid process

1704 file.tmp
1572 MitFiles138.exe
1172 rtKFLWBnQ.exe
Loads dropped DLL 6 IoCs

Processes:

file.exefile.tmpMitFiles138.exe

pid process

1916 file.exe
1704 file.tmp
1704 file.tmp
1704 file.tmp
1704 file.tmp
1572 MitFiles138.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

pid	process
1704	file.tmp
1572	MitFiles138.exe
1172	rtKFLWBnQ.exe

pid	process
1916	file.exe
1704	file.tmp
1704	file.tmp
1704	file.tmp
1704	file.tmp
1572	MitFiles138.exe

Drops file in Program Files directory 17 IoCs

Processes:

file.tmp

description	ioc	process
File created	C:\Program Files (x86)\Mit Files\language\is-HPHLT.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-348RB.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-KVJOU.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-V3HBV.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-3TAJD.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-ULSLE.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Mit Files\unins000.dat	file.tmp
File opened for modification	C:\Program Files (x86)\Mit Files\MitFiles138.exe	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-3TULM.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-VBR3C.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-OUSQP.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-9MV03.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-HNJRE.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-EVO24.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-V0QTG.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-F9N4E.tmp	file.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

Processes:

taskkill.exe

pid process

800 taskkill.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

MitFiles138.exe

pid process

1572 MitFiles138.exe
1572 MitFiles138.exe
1572 MitFiles138.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 800 taskkill.exe

pid	process
800	taskkill.exe

pid	process
1572	MitFiles138.exe
1572	MitFiles138.exe
1572	MitFiles138.exe

description	pid	process
Token: SeDebugPrivilege	800	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

file.exefile.tmpMitFiles138.execmd.exe

description	pid	process	target process
PID 1916 wrote to memory of 1704	1916	file.exe	file.tmp
PID 1916 wrote to memory of 1704	1916	file.exe	file.tmp
PID 1916 wrote to memory of 1704	1916	file.exe	file.tmp
PID 1916 wrote to memory of 1704	1916	file.exe	file.tmp
PID 1916 wrote to memory of 1704	1916	file.exe	file.tmp
PID 1916 wrote to memory of 1704	1916	file.exe	file.tmp
PID 1916 wrote to memory of 1704	1916	file.exe	file.tmp
PID 1704 wrote to memory of 1572	1704	file.tmp	MitFiles138.exe
PID 1704 wrote to memory of 1572	1704	file.tmp	MitFiles138.exe
PID 1704 wrote to memory of 1572	1704	file.tmp	MitFiles138.exe
PID 1704 wrote to memory of 1572	1704	file.tmp	MitFiles138.exe
PID 1572 wrote to memory of 1172	1572	MitFiles138.exe	rtKFLWBnQ.exe
PID 1572 wrote to memory of 1172	1572	MitFiles138.exe	rtKFLWBnQ.exe
PID 1572 wrote to memory of 1172	1572	MitFiles138.exe	rtKFLWBnQ.exe
PID 1572 wrote to memory of 1172	1572	MitFiles138.exe	rtKFLWBnQ.exe
PID 1572 wrote to memory of 632	1572	MitFiles138.exe	cmd.exe
PID 1572 wrote to memory of 632	1572	MitFiles138.exe	cmd.exe
PID 1572 wrote to memory of 632	1572	MitFiles138.exe	cmd.exe
PID 1572 wrote to memory of 632	1572	MitFiles138.exe	cmd.exe
PID 632 wrote to memory of 800	632	cmd.exe	taskkill.exe
PID 632 wrote to memory of 800	632	cmd.exe	taskkill.exe
PID 632 wrote to memory of 800	632	cmd.exe	taskkill.exe
PID 632 wrote to memory of 800	632	cmd.exe	taskkill.exe

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:1916
- C:\Users\Admin\AppData\Local\Temp\is-H62TA.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-H62TA.tmp\file.tmp" /SL5="$60126,1351177,483328,C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:1704
- - C:\Program Files (x86)\Mit Files\MitFiles138.exe
    "C:\Program Files (x86)\Mit Files\MitFiles138.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1572
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\rtKFLWBnQ.exe
      4⤵
      Executes dropped EXE
      PID:1172
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "MitFiles138.exe" /f & erase "C:\Program Files (x86)\Mit Files\MitFiles138.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:632
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "MitFiles138.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:800

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

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Downloads

C:\Program Files (x86)\Mit Files\MitFiles138.exe

Filesize
1.8MB

MD5
69524f5a8c4cf1f9eb19c35bc91b5fca

SHA1
a0819b4ec52347db75ec36b766e0905f34d277ed

SHA256
15682b2e3f750b36332fab836e64fff3d966feb96dc9d520a1661f0ab5b7b028

SHA512
ccf03b511fa3853611619872f4451b5533a114df2a5c2dca2756314305300c65a3b8ebc7e1fc0670f63ff8aae32face011c887d6cebf7624d0dddb08c7b2c152

Download Submit
C:\Program Files (x86)\Mit Files\MitFiles138.exe

Filesize
1.8MB

MD5
69524f5a8c4cf1f9eb19c35bc91b5fca

SHA1
a0819b4ec52347db75ec36b766e0905f34d277ed

SHA256
15682b2e3f750b36332fab836e64fff3d966feb96dc9d520a1661f0ab5b7b028

SHA512
ccf03b511fa3853611619872f4451b5533a114df2a5c2dca2756314305300c65a3b8ebc7e1fc0670f63ff8aae32face011c887d6cebf7624d0dddb08c7b2c152

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-H62TA.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-H62TA.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

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

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Program Files (x86)\Mit Files\MitFiles138.exe

Filesize
1.8MB

MD5
69524f5a8c4cf1f9eb19c35bc91b5fca

SHA1
a0819b4ec52347db75ec36b766e0905f34d277ed

SHA256
15682b2e3f750b36332fab836e64fff3d966feb96dc9d520a1661f0ab5b7b028

SHA512
ccf03b511fa3853611619872f4451b5533a114df2a5c2dca2756314305300c65a3b8ebc7e1fc0670f63ff8aae32face011c887d6cebf7624d0dddb08c7b2c152

Download Submit
\Users\Admin\AppData\Local\Temp\is-H62TA.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

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

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

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

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

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

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

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

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/632-83-0x0000000000000000-mapping.dmp

Download
memory/800-84-0x0000000000000000-mapping.dmp

Download
memory/1172-75-0x0000000000000000-mapping.dmp

Download
memory/1572-70-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/1572-71-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/1572-73-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/1572-85-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/1572-66-0x0000000000000000-mapping.dmp

Download
memory/1572-82-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/1572-77-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/1704-81-0x00000000036A0000-0x0000000004662000-memory.dmp

Filesize
15.8MB

Download
memory/1704-69-0x00000000036A0000-0x0000000004662000-memory.dmp

Filesize
15.8MB

Download
memory/1704-58-0x0000000000000000-mapping.dmp

Download
memory/1916-68-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/1916-54-0x0000000075C51000-0x0000000075C53000-memory.dmp

Filesize
8KB

Download
memory/1916-86-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/1916-55-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download