nymaim | da1ffb98a1ba267cd9056c23de1823f30ad4d6b585cf8bb0cef42dff1c980e41

Analysis

max time kernel
258s
max time network
370s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
04-12-2022 02:32

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General

Target

file.exe
Size

3.4MB
MD5

c6034f4549b86d011801c27633dfcb86
SHA1

a4ac5a645aab0ef3d9a30959633bc87b30051568
SHA256

da1ffb98a1ba267cd9056c23de1823f30ad4d6b585cf8bb0cef42dff1c980e41
SHA512

da6c9c8ef0417c1e130f54fd4e15aa095274b6d7fa1c69dca8663dc7a60f3a5f85209cd4293a56f7885fd73fb0f9f87406d6523357404ce5fdd95d363cb1b2d8
SSDEEP

98304:wfZnCpv0q9NW44ER0GjaT59FU2/VRJZGzyXcy0:EZnCpvzNTLqsaN9vjziyXcy0

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
584	is-S0CQB.tmp
1292	PrintFolders.exe
908	M0Jhe.exe

Loads dropped DLL 10 IoCs

pid	Process
360	file.exe
584	is-S0CQB.tmp
584	is-S0CQB.tmp
584	is-S0CQB.tmp
584	is-S0CQB.tmp
1292	PrintFolders.exe
1292	PrintFolders.exe
1292	PrintFolders.exe
908	M0Jhe.exe
908	M0Jhe.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\unins000.dat	is-S0CQB.tmp
File created	C:\Program Files (x86)\PrintFolders\is-LJ2ER.tmp	is-S0CQB.tmp
File created	C:\Program Files (x86)\PrintFolders\is-MNSR4.tmp	is-S0CQB.tmp
File created	C:\Program Files (x86)\PrintFolders\is-76OGA.tmp	is-S0CQB.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\unins000.dat	is-S0CQB.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\PrintFolders.exe	is-S0CQB.tmp
File created	C:\Program Files (x86)\PrintFolders\is-KDP4K.tmp	is-S0CQB.tmp
File created	C:\Program Files (x86)\PrintFolders\is-0NI3R.tmp	is-S0CQB.tmp
File created	C:\Program Files (x86)\PrintFolders\is-S9VNP.tmp	is-S0CQB.tmp

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1292	PrintFolders.exe
1292	PrintFolders.exe
1292	PrintFolders.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 360 wrote to memory of 584	360	file.exe	28
PID 360 wrote to memory of 584	360	file.exe	28
PID 360 wrote to memory of 584	360	file.exe	28
PID 360 wrote to memory of 584	360	file.exe	28
PID 360 wrote to memory of 584	360	file.exe	28
PID 360 wrote to memory of 584	360	file.exe	28
PID 360 wrote to memory of 584	360	file.exe	28
PID 584 wrote to memory of 1292	584	is-S0CQB.tmp	29
PID 584 wrote to memory of 1292	584	is-S0CQB.tmp	29
PID 584 wrote to memory of 1292	584	is-S0CQB.tmp	29
PID 584 wrote to memory of 1292	584	is-S0CQB.tmp	29
PID 584 wrote to memory of 1292	584	is-S0CQB.tmp	29
PID 584 wrote to memory of 1292	584	is-S0CQB.tmp	29
PID 584 wrote to memory of 1292	584	is-S0CQB.tmp	29
PID 1292 wrote to memory of 908	1292	PrintFolders.exe	30
PID 1292 wrote to memory of 908	1292	PrintFolders.exe	30
PID 1292 wrote to memory of 908	1292	PrintFolders.exe	30
PID 1292 wrote to memory of 908	1292	PrintFolders.exe	30
PID 1292 wrote to memory of 908	1292	PrintFolders.exe	30
PID 1292 wrote to memory of 908	1292	PrintFolders.exe	30
PID 1292 wrote to memory of 908	1292	PrintFolders.exe	30

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:360
- C:\Users\Admin\AppData\Local\Temp\is-9ENHC.tmp\is-S0CQB.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-9ENHC.tmp\is-S0CQB.tmp" /SL4 $8001C "C:\Users\Admin\AppData\Local\Temp\file.exe" 3379329 51712
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:584
- - 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:1292
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\M0Jhe.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      PID:908

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)\PrintFolders\PrintFolders.exe

Filesize
5.7MB

MD5
7298f1dba651b53f57de70bfaa68513b

SHA1
82d1a33bedd06d13fe2e84c24b6f6f3c7f92e283

SHA256
2fee859c53ced4e276a7738cd55740a4a64fbac4f3f6dbc9d1b84339357b6919

SHA512
ca9fca317dfbe1d19763a8633005e420ca47296be1dc781da559a12e1e44018e25c25cdb17eea81d0c6a5b901d477f342b1cf70169e0bcdbf7486a4f9d23c6ab

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

Filesize
5.7MB

MD5
7298f1dba651b53f57de70bfaa68513b

SHA1
82d1a33bedd06d13fe2e84c24b6f6f3c7f92e283

SHA256
2fee859c53ced4e276a7738cd55740a4a64fbac4f3f6dbc9d1b84339357b6919

SHA512
ca9fca317dfbe1d19763a8633005e420ca47296be1dc781da559a12e1e44018e25c25cdb17eea81d0c6a5b901d477f342b1cf70169e0bcdbf7486a4f9d23c6ab

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-9ENHC.tmp\is-S0CQB.tmp

Filesize
643KB

MD5
363a4d2aa5d6cf5cbb2267cccf0c4436

SHA1
a4cdb756698ed28f522956166a6292e9e309dd9c

SHA256
b5cd942dd7019c1cda1715e4ce942094c41ad1e7bc7c5f63fe3ab7d97bc5a021

SHA512
b5929be6e258a63557f376b50a40f6d465cbd372a88e7dcae7944faacb9181cd55873f52dee99cee2e3705596b3b55cb6f784db800f5a32f06e63b9ead3e7c70

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-9ENHC.tmp\is-S0CQB.tmp

Filesize
643KB

MD5
363a4d2aa5d6cf5cbb2267cccf0c4436

SHA1
a4cdb756698ed28f522956166a6292e9e309dd9c

SHA256
b5cd942dd7019c1cda1715e4ce942094c41ad1e7bc7c5f63fe3ab7d97bc5a021

SHA512
b5929be6e258a63557f376b50a40f6d465cbd372a88e7dcae7944faacb9181cd55873f52dee99cee2e3705596b3b55cb6f784db800f5a32f06e63b9ead3e7c70

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\M0Jhe.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\M0Jhe.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

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

Filesize
5.7MB

MD5
7298f1dba651b53f57de70bfaa68513b

SHA1
82d1a33bedd06d13fe2e84c24b6f6f3c7f92e283

SHA256
2fee859c53ced4e276a7738cd55740a4a64fbac4f3f6dbc9d1b84339357b6919

SHA512
ca9fca317dfbe1d19763a8633005e420ca47296be1dc781da559a12e1e44018e25c25cdb17eea81d0c6a5b901d477f342b1cf70169e0bcdbf7486a4f9d23c6ab

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

Filesize
5.7MB

MD5
7298f1dba651b53f57de70bfaa68513b

SHA1
82d1a33bedd06d13fe2e84c24b6f6f3c7f92e283

SHA256
2fee859c53ced4e276a7738cd55740a4a64fbac4f3f6dbc9d1b84339357b6919

SHA512
ca9fca317dfbe1d19763a8633005e420ca47296be1dc781da559a12e1e44018e25c25cdb17eea81d0c6a5b901d477f342b1cf70169e0bcdbf7486a4f9d23c6ab

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

Filesize
5.7MB

MD5
7298f1dba651b53f57de70bfaa68513b

SHA1
82d1a33bedd06d13fe2e84c24b6f6f3c7f92e283

SHA256
2fee859c53ced4e276a7738cd55740a4a64fbac4f3f6dbc9d1b84339357b6919

SHA512
ca9fca317dfbe1d19763a8633005e420ca47296be1dc781da559a12e1e44018e25c25cdb17eea81d0c6a5b901d477f342b1cf70169e0bcdbf7486a4f9d23c6ab

Download Submit
\Users\Admin\AppData\Local\Temp\is-9ENHC.tmp\is-S0CQB.tmp

Filesize
643KB

MD5
363a4d2aa5d6cf5cbb2267cccf0c4436

SHA1
a4cdb756698ed28f522956166a6292e9e309dd9c

SHA256
b5cd942dd7019c1cda1715e4ce942094c41ad1e7bc7c5f63fe3ab7d97bc5a021

SHA512
b5929be6e258a63557f376b50a40f6d465cbd372a88e7dcae7944faacb9181cd55873f52dee99cee2e3705596b3b55cb6f784db800f5a32f06e63b9ead3e7c70

Download Submit
\Users\Admin\AppData\Local\Temp\is-GNTT4.tmp\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-GNTT4.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-GNTT4.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}\M0Jhe.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\M0Jhe.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\M0Jhe.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/360-55-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/360-66-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/360-54-0x0000000075C11000-0x0000000075C13000-memory.dmp

Filesize
8KB

Download
memory/360-57-0x0000000000400000-0x0000000000413000-memory.dmp

Filesize
76KB

Download
memory/584-59-0x0000000000000000-mapping.dmp

Download
memory/584-79-0x0000000003040000-0x00000000043FD000-memory.dmp

Filesize
19.7MB

Download
memory/584-70-0x0000000003040000-0x00000000043FD000-memory.dmp

Filesize
19.7MB

Download
memory/908-85-0x0000000000000000-mapping.dmp

Download
memory/1292-81-0x0000000000400000-0x00000000017BD000-memory.dmp

Filesize
19.7MB

Download
memory/1292-82-0x0000000001EA0000-0x000000000325D000-memory.dmp

Filesize
19.7MB

Download
memory/1292-83-0x0000000001EA0000-0x000000000325D000-memory.dmp

Filesize
19.7MB

Download
memory/1292-80-0x0000000000400000-0x00000000017BD000-memory.dmp

Filesize
19.7MB

Download
memory/1292-77-0x0000000001EA0000-0x000000000325D000-memory.dmp

Filesize
19.7MB

Download
memory/1292-76-0x0000000001EA0000-0x000000000325D000-memory.dmp

Filesize
19.7MB

Download
memory/1292-68-0x0000000000000000-mapping.dmp

Download
memory/1292-71-0x0000000000400000-0x00000000017BD000-memory.dmp

Filesize
19.7MB

Download
memory/1292-78-0x0000000000400000-0x00000000017BD000-memory.dmp

Filesize
19.7MB

Download
memory/1292-91-0x0000000000400000-0x00000000017BD000-memory.dmp

Filesize
19.7MB

Download
memory/1292-92-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download